9-Letter Words Starting With I
Here's the list of all the 1243 9-Letter Words Starting With I in the English Language.
The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.
| Common Words (with Definitions and Examples) | |
|---|---|
| insurance | 1. promise of reimbursement in the case of loss; paid to people or companies so concerned about hazards that they have made prepayments to an insurance company 2. written contract or certificate of insurance More Definitions → |
| important | 1. of great significance or value 2. important in effect or meaning More Definitions → |
| institute | 1. an association organized to promote art or science or education 2. set up or lay the groundwork for More Definitions → |
| interface | 1. (chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases) 2. (computer science) a program that controls a display for the user (usually on a computer monitor) and that allows the user to interact with the system More Definitions → |
| increased | 1. made greater in size or amount or degree More Definitions → |
| interview | 1. the questioning of a person (or a conversation in which information is elicited); often conducted by journalists 2. a conference (usually with someone important) More Definitions → |
| installed | 1. set up for use 2. put into an office or a position More Definitions → |
| influence | 1. a power to affect persons or events especially power based on prestige etc 2. causing something without any direct or apparent effort More Definitions → |
| immediate | 1. having no intervening medium 2. of the present time and place More Definitions → |
| inventory | 1. a detailed list of all the items in stock 2. the merchandise that a shop has on hand More Definitions → |
| implement | 1. apply in a manner consistent with its purpose or design 2. ensure observance of laws and rules More Definitions → |
| improving | 1. getting higher or more vigorous More Definitions → |
| investing | 1. the act of investing; laying out money or capital in an enterprise with the expectation of profit More Definitions → |
| infection | 1. the pathological state resulting from the invasion of the body by pathogenic microorganisms 2. (phonetics) the alteration of a speech sound under the influence of a neighboring sound More Definitions → |
| integrity | 1. an undivided or unbroken completeness or totality with nothing wanting 2. moral soundness More Definitions → |
| introduce | 1. cause to come to know personally 2. bring something new to an environment More Definitions → |
| injection | 1. the forceful insertion of a substance under pressure 2. any solution that is injected (as into the skin) More Definitions → |
| initially | 1. at the beginning More Definitions → |
| indicator | 1. a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time 2. a signal for attracting attention More Definitions → |
| instantly | 1. without delay or hesitation; with no time intervening 2. without any delay More Definitions → |
| inclusive | 1. including much or everything; and especially including stated limits More Definitions → |
| inclusion | 1. the state of being included 2. the relation of comprising something More Definitions → |
| intensive | 1. tending to give force or emphasis 2. of agriculture; intended to increase productivity of a fixed area by expending more capital and labor More Definitions → |
| intensity | 1. the amount of energy transmitted (as by acoustic or electromagnetic radiation) 2. high level or degree; the property of being intense More Definitions → |
| identical | 1. (of twins) derived from a single egg or ovum 2. exactly alike; incapable of being perceived as different More Definitions → |
| inflation | 1. a general and progressive increase in prices 2. (cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang More Definitions → |
| incorrect | 1. not correct; not in conformity with fact or truth 2. not in accord with established usage or procedure More Definitions → |
| invention | 1. the creation of something in the mind 2. a creation (a new device or process) resulting from study and experimentation More Definitions → |
| incentive | 1. a positive motivational influence 2. an additional payment (or other remuneration) to employees as a means of increasing output More Definitions → |
| intention | 1. an anticipated outcome that is intended or that guides your planned actions 2. (usually plural) the goal with respect to a marriage proposal More Definitions → |
| inspector | 1. a high ranking police officer 2. an investigator who observes carefully More Definitions → |
| integrate | 1. make into a whole or make part of a whole 2. open (a place) to members of all races and ethnic groups More Definitions → |
| isolation | 1. a state of separation between persons or groups 2. a feeling of being disliked and alone More Definitions → |
| inherited | 1. occurring among members of a family usually by heredity More Definitions → |
| invisible | 1. impossible or nearly impossible to see; imperceptible by the eye 2. not prominent or readily noticeable More Definitions → |
| impressed | 1. deeply or markedly affected or influenced More Definitions → |
| induction | 1. a formal entry into an organization or position or office 2. an electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of current More Definitions → |
| incidence | 1. the relative frequency of occurrence of something 2. the striking of a light beam on a surface More Definitions → |
| insertion | 1. a message (spoken or written) that is introduced or inserted 2. the act of putting one thing into another More Definitions → |
| interpret | 1. make sense of; assign a meaning to 2. give an interpretation or explanation to More Definitions → |
| intuitive | 1. spontaneously derived from or prompted by a natural tendency 2. obtained through intuition rather than from reasoning or observation More Definitions → |
| interrupt | 1. make a break in 2. destroy the peace or tranquility of More Definitions → |
| inability | 1. lack of ability (especially mental ability) to do something 2. lacking the power to perform More Definitions → |
| ignorance | 1. the lack of knowledge or education More Definitions → |
| influenza | 1. an acute febrile highly contagious viral disease More Definitions → |
| immigrant | 1. a person who comes to a country where they were not born in order to settle there More Definitions → |
| interfere | 1. come between so as to be hindrance or obstacle 2. get involved, so as to alter or hinder an action, or through force or threat of force More Definitions → |
| inspiring | 1. stimulating or exalting to the spirit More Definitions → |
| intrusion | 1. any entry into an area not previously occupied 2. entrance by force or without permission or welcome More Definitions → |
| inhibitor | 1. a substance that retards or stops an activity More Definitions → |
| itinerary | 1. an established line of travel or access 2. a guidebook for travelers More Definitions → |
| irregular | 1. a member of an irregular armed force that fights a stronger force by sabotage and harassment 2. merchandise that has imperfections; usually sold at a reduced price without the brand name More Definitions → |
| importing | 1. the commercial activity of buying and bringing in goods from a foreign country More Definitions → |
| intrinsic | 1. belonging to a thing by its very nature 2. situated within or belonging solely to the organ or body part on which it acts More Definitions → |
| inference | 1. the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation More Definitions → |
| innocence | 1. the quality of innocent naivete 2. the state of being unsullied by sin or moral wrong; lacking a knowledge of evil More Definitions → |
| incumbent | 1. the official who holds an office 2. lying or leaning on something else More Definitions → |
| invariant | 1. a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it 2. unaffected by a designated operation or transformation More Definitions → |
| increment | 1. a process of becoming larger or longer or more numerous or more important 2. the amount by which something increases More Definitions → |
| inception | 1. an event that is a beginning; a first part or stage of subsequent events More Definitions → |
| impedance | 1. a material's opposition to the flow of electric current; measured in ohms More Definitions → |
| imaginary | 1. (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1 2. not based on fact; existing only in the imagination More Definitions → |
| inpatient | 1. a patient who is residing in the hospital where he is being treated More Definitions → |
| inorganic | 1. relating or belonging to the class of compounds not having a carbon basis 2. lacking the properties characteristic of living organisms More Definitions → |
| iteration | 1. (computer science) a single execution of a set of instructions that are to be repeated 2. (computer science) executing the same set of instructions a given number of times or until a specified result is obtained More Definitions → |
| informing | 1. to furnish incriminating evidence to an officer of the law (usually in return for favors) 2. a speech act that conveys information More Definitions → |
| inaugural | 1. an address delivered at an inaugural ceremony (especially by a United States president) 2. the ceremonial induction into a position More Definitions → |
| injustice | 1. an unjust act 2. the practice of being unjust or unfair More Definitions → |
| imitation | 1. the doctrine that representations of nature or human behavior should be accurate imitations 2. something copied or derived from an original More Definitions → |
| illegally | 1. in an illegal manner More Definitions → |
| immersion | 1. sinking until covered completely with water 2. (astronomy) the disappearance of a celestial body prior to an eclipse More Definitions → |
| intuition | 1. instinctive knowing (without the use of rational processes) 2. an impression that something might be the case More Definitions → |
| intellect | 1. knowledge and intellectual ability 2. the capacity for rational thought or inference or discrimination More Definitions → |
| impotence | 1. the quality of lacking strength or power; being weak and feeble 2. an inability (usually of the male animal) to copulate More Definitions → |
| indemnity | 1. protection against future loss 2. legal exemption from liability for damages More Definitions → |
| impartial | 1. showing lack of favoritism 2. free from undue bias or preconceived opinions More Definitions → |
| intervene | 1. get involved, so as to alter or hinder an action, or through force or threat of force 2. be placed or located between other things or extend between spaces and events More Definitions → |
| intercept | 1. seize on its way 2. tap a telephone or telegraph wire to get information More Definitions → |
| intricate | 1. having many complexly arranged elements; elaborate More Definitions → |
| incapable | 1. not being susceptible to or admitting of something (usually followed by `of') 2. not meeting requirements More Definitions → |
| inversion | 1. the layer of air near the earth is cooler than an overlying layer 2. abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth) More Definitions → |
| inhibited | 1. held back or restrained or prevented More Definitions → |
| imperfect | 1. a tense of verbs used in describing action that is on-going 2. wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings More Definitions → |
| imbalance | 1. a lack of balance or state of disequilibrium 2. lack of proportion; imbalance among the parts of something More Definitions → |
| impending | 1. close in time; about to occur More Definitions → |
| intestine | 1. the part of the alimentary canal between the stomach and the anus More Definitions → |
| iterative | 1. the aspect of the verb that expresses the repetition of an action 2. marked by iteration More Definitions → |
| ingestion | 1. the process of taking food into the body through the mouth (as by eating) More Definitions → |
| incubator | 1. apparatus consisting of a box designed to maintain a constant temperature by the use of a thermostat; used for chicks or premature infants More Definitions → |
| inhabited | 1. having inhabitants; lived in More Definitions → |
| intensely | 1. to a high degree; extremely; in high concentration or density 2. to a great depth psychologically or emotionally More Definitions → |
| indemnify | 1. secure against future loss, damage, or liability; give security for 2. make amends for; pay compensation for More Definitions → |
| inscribed | 1. written (by handwriting, printing, engraving, or carving) on or in a surface 2. cut or impressed into a surface More Definitions → |
| immensely | 1. to an exceedingly great extent or degree More Definitions → |
| inductive | 1. arising from inductance 2. of reasoning; proceeding from particular facts to a general conclusion More Definitions → |
| interplay | 1. reciprocal action and reaction More Definitions → |
| insulting | 1. expressing extreme contempt More Definitions → |
| intrusive | 1. tending to intrude (especially upon privacy) 2. of rock material; forced while molten into cracks between layers of other rock More Definitions → |
| initiator | 1. a person who initiates a course of action More Definitions → |
| irritable | 1. easily irritated or annoyed 2. abnormally sensitive to a stimulus More Definitions → |
| inventive | 1. (used of persons or artifacts) marked by independence and creativity in thought or action More Definitions → |
| insisting | 1. continual and persistent demands More Definitions → |
| implanted | 1. (used especially of ideas or principles) deeply rooted; firmly fixed or held More Definitions → |
| impatient | 1. (usually followed by `to') full of eagerness 2. restless or short-tempered under delay or opposition More Definitions → |
| innovator | 1. someone who helps to open up a new line of research or technology or art More Definitions → |
| ingenious | 1. showing inventiveness and skill More Definitions → |
| ingenuity | 1. the power of creative imagination 2. the property of being ingenious More Definitions → |
| illogical | 1. lacking in correct logical relation 2. lacking orderly continuity More Definitions → |
| interlude | 1. an intervening period or episode 2. a brief show (music or dance etc) inserted between the sections of a longer performance More Definitions → |
| informant | 1. a person who supplies information 2. someone who sees an event and reports what happened More Definitions → |
| interlock | 1. a device that prevents an automotive engine from starting 2. the act of interlocking or meshing More Definitions → |
| ibuprofen | 1. a nonsteroidal anti-inflammatory and analgesic medicine (trade names Advil and Motrin and Nuprin) used to relieve the pain of arthritis and as an antipyretic More Definitions → |
| isolating | 1. relating to or being a language in which each word typically expresses a distinct idea and part of speech and syntactical relations are determined almost exclusively by word order and particles More Definitions → |
| irritated | 1. aroused to impatience or anger More Definitions → |
| intersect | 1. meet at a point More Definitions → |
| intensify | 1. increase in extent or intensity 2. make more intense, stronger, or more marked More Definitions → |
| inquiring | 1. a request for information 2. given to inquiry More Definitions → |
| interment | 1. the ritual placing of a corpse in a grave More Definitions → |
| insulator | 1. a material such as glass or porcelain with negligible electrical or thermal conductivity More Definitions → |
| infirmary | 1. a health facility where patients receive treatment More Definitions → |
| incurring | 1. make oneself subject to; bring upon oneself; become liable to 2. receive a specified treatment (abstract) More Definitions → |
| indenture | 1. a concave cut into a surface or edge (as in a coastline) 2. formal agreement between the issuer of bonds and the bondholders as to terms of the debt More Definitions → |
| insurgent | 1. a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions) 2. a member of an irregular armed force that fights a stronger force by sabotage and harassment More Definitions → |
| impromptu | 1. an extemporaneous speech or remark 2. a short musical passage that seems to have been made spontaneously without advance preparation More Definitions → |
| ideograph | 1. a graphic character that indicates the meaning of a thing without indicating the sounds used to say it More Definitions → |
| isotropic | 1. invariant with respect to direction More Definitions → |
| insoluble | 1. without hope of solution 2. (of a substance) incapable of being dissolved More Definitions → |
| inaudible | 1. impossible to hear; imperceptible by the ear More Definitions → |
| interlink | 1. be interwoven or interconnected 2. cause to be interconnected or interwoven More Definitions → |
| insidious | 1. beguiling but harmful 2. intended to entrap More Definitions → |
| immutable | 1. not subject or susceptible to change or variation in form or quality or nature 2. constant and unchanging More Definitions → |
| incarnate | 1. make concrete and real 2. represent in bodily form More Definitions → |
| impulsive | 1. proceeding from natural feeling or impulse without external stimulus 2. without forethought More Definitions → |
| inclement | 1. (of weather or climate) severe 2. used of persons or behavior; showing no clemency or mercy More Definitions → |
| insolvent | 1. someone who has insufficient assets to cover their debts 2. unable to meet or discharge financial obligations More Definitions → |
| indulgent | 1. characterized by or given to yielding to the wishes of someone 2. tolerant or lenient More Definitions → |
| inelastic | 1. not elastic More Definitions → |
| injurious | 1. harmful to living things More Definitions → |
| inversely | 1. in an inverse or contrary manner More Definitions → |
| innkeeper | 1. the owner or manager of an inn More Definitions → |
| inundated | 1. covered with water More Definitions → |
| isometric | 1. related by an isometry 2. of or involving muscular contraction in which tension increases while length remains constant More Definitions → |
| innermost | 1. being deepest within the self 2. situated or occurring farthest within More Definitions → |
| incognito | 1. with your identity concealed 2. without revealing one's identity More Definitions → |
| infantile | 1. of or relating to infants or infancy 2. indicating a lack of maturity More Definitions → |
| incessant | 1. uninterrupted in time and indefinitely long continuing More Definitions → |
| isomerase | 1. an enzyme that catalyzes its substrate to an isomeric form More Definitions → |
| immediacy | 1. lack of an intervening or mediating agency 2. immediate intuitive awareness More Definitions → |
| immunized | 1. having been rendered unsusceptible to a disease More Definitions → |
| itinerant | 1. a laborer who moves from place to place as demanded by employment 2. traveling from place to place to work More Definitions → |
| infective | 1. able to cause disease 2. caused by infection or capable of causing infection More Definitions → |
| idealized | 1. exalted to an ideal perfection or excellence More Definitions → |
| innocuous | 1. not causing disapproval 2. lacking intent or capacity to injure More Definitions → |
| immovable | 1. property consisting of houses and land 2. not able or intended to be moved More Definitions → |
| inanimate | 1. appearing dead; not breathing or having no perceptible pulse 2. belonging to the class of nouns denoting nonliving things More Definitions → |
| indulging | 1. the act of indulging or gratifying a desire More Definitions → |
| illegible | 1. (of handwriting, print, etc.) not legible More Definitions → |
| incurable | 1. a person whose disease is incurable 2. incapable of being cured More Definitions → |
| insomniac | 1. someone who cannot sleep 2. experiencing or accompanied by sleeplessness More Definitions → |
| indelible | 1. cannot be removed or erased More Definitions → |
| ingrained | 1. (used especially of ideas or principles) deeply rooted; firmly fixed or held More Definitions → |
| indignant | 1. angered at something unjust or wrong More Definitions → |
| imprecise | 1. not precise More Definitions → |
| insistent | 1. repetitive and persistent 2. demanding attention More Definitions → |
| implosion | 1. a sudden inward collapse 2. the initial occluded phase of a stop consonant More Definitions → |
| infertile | 1. incapable of reproducing More Definitions → |
| improvise | 1. perform without preparation 2. manage in a makeshift way; do with whatever is at hand More Definitions → |
| incipient | 1. only partly in existence; imperfectly formed More Definitions → |
| indecency | 1. the quality of being indecent 2. an indecent or improper act More Definitions → |
| implicate | 1. bring into intimate and incriminating connection 2. impose, involve, or imply as a necessary accompaniment or result More Definitions → |
| inferring | 1. reason by deduction; establish by deduction 2. draw from specific cases for more general cases More Definitions → |
| incursion | 1. the act of entering some territory or domain (often in large numbers) 2. an attack that penetrates into enemy territory More Definitions → |
| imparting | 1. the transmission of information More Definitions → |
| insurable | 1. capable of being insured or eligible to be insured More Definitions → |
| ischaemic | 1. relating to or affected by ischemia More Definitions → |
| inflected | 1. (of the voice) altered in tone or pitch 2. showing alteration in form (especially by the addition of affixes) More Definitions → |
| isoniazid | 1. antibacterial drug (trade name Nydrazid) used to treat tuberculosis More Definitions → |
| immunogen | 1. any substance or organism that provokes an immune response (produces immunity) when introduced into the body More Definitions → |
| insolence | 1. the trait of being rude and impertinent; inclined to take liberties 2. an offensive disrespectful impudent act More Definitions → |
| infirmity | 1. the state of being weak in health or body (especially from old age) More Definitions → |
| infielder | 1. (baseball) a person who plays a position in the infield More Definitions → |
| interlace | 1. spin, wind, or twist together 2. hold in a locking position More Definitions → |
| idiomatic | 1. of or relating to or conforming to idiom More Definitions → |
| instigate | 1. provoke or stir up 2. serve as the inciting cause of More Definitions → |
| intestate | 1. having made no legally valid will before death or not disposed of by a legal will More Definitions → |
| insincere | 1. lacking sincerity More Definitions → |
| ineffable | 1. defying expression or description 2. too sacred to be uttered More Definitions → |
| intruding | 1. projecting inward More Definitions → |
| immigrate | 1. migrate to a new environment 2. introduce or send as immigrants More Definitions → |
| internode | 1. a segment of a stem between two nodes More Definitions → |
| internist | 1. a specialist in internal medicine More Definitions → |
| imprudent | 1. not prudent or wise 2. lacking wise self-restraint More Definitions → |
| invisibly | 1. without being seen More Definitions → |
| intercede | 1. act between parties with a view to reconciling differences More Definitions → |
| impetuous | 1. characterized by undue haste and lack of thought or deliberation 2. marked by violent force More Definitions → |
| ironworks | 1. the workplace where iron is smelted or where iron goods are made More Definitions → |
| indinavir | 1. a protease inhibitor (trade name Crixivan) used for treating HIV More Definitions → |
| introvert | 1. fold inwards 2. turn inside More Definitions → |
| imperious | 1. having or showing arrogant superiority to and disdain of those one views as unworthy More Definitions → |
| imidazole | 1. an organic base C3H4N2; a histamine inhibitor More Definitions → |
| invective | 1. abusive or venomous language used to express blame or censure or bitter deep-seated ill will More Definitions → |
| irritably | 1. in a petulant manner 2. in an irritable manner More Definitions → |
| ischaemia | 1. local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism More Definitions → |
| immensity | 1. unusual largeness in size or extent or number More Definitions → |
| indignity | 1. an affront to one's dignity or self-esteem More Definitions → |
| impotency | 1. the quality of lacking strength or power; being weak and feeble 2. an inability (usually of the male animal) to copulate More Definitions → |
| imbroglio | 1. an intricate and confusing interpersonal or political situation 2. a very embarrassing misunderstanding More Definitions → |
| inculcate | 1. teach and impress by frequent repetitions or admonitions More Definitions → |
| imitative | 1. marked by or given to imitation 2. (of words) formed in imitation of a natural sound More Definitions → |