9-Letter Words Starting With O
Here's the list of all the 1407 9-Letter Words Starting With O 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) | |
|---|---|
| operating | 1. involved in a kind of operation 2. being in effect or operation More Definitions → |
| operation | 1. the state of being in effect or being operative 2. a business especially one run on a large scale More Definitions → |
| otherwise | 1. other than as supposed or expected 2. in other respects or ways More Definitions → |
| objective | 1. undistorted by emotion or personal bias; based on observable phenomena 2. serving as or indicating the object of a verb or of certain prepositions and used for certain other purposes More Definitions → |
| ownership | 1. the relation of an owner to the thing possessed; possession with the right to transfer possession to others 2. the act of having and controlling property More Definitions → |
| organized | 1. formed into a structured or coherent whole, particularly on a large scale 2. methodical and efficient in arrangement or function More Definitions → |
| obviously | 1. unmistakably (`plain' is often used informally for `plainly') More Definitions → |
| overnight | 1. lasting, open, or operating through the whole night 2. during or for the length of one night More Definitions → |
| orchestra | 1. a musical organization consisting of a group of instrumentalists including string players 2. seating on the main floor in a theater More Definitions → |
| offensive | 1. the action of attacking an enemy 2. violating or tending to violate or offend against More Definitions → |
| occasions | 1. something you have to do More Definitions → |
| ordinance | 1. an authoritative command 2. a statute enacted by a city government More Definitions → |
| organizer | 1. a person who brings order and organization to an enterprise 2. someone who enlists workers to join a union More Definitions → |
| occurring | 1. come to pass 2. come to one's mind; suggest itself More Definitions → |
| organised | 1. being a member of or formed into a labor union More Definitions → |
| oversight | 1. an unintentional omission resulting from failure to notice something 2. management by overseeing the performance or operation of a person or group More Definitions → |
| operative | 1. a person secretly employed in espionage for a government 2. someone who can be employed as a detective to collect information and assist in criminal investigations More Definitions → |
| occupancy | 1. an act of being a tenant or occupant 2. the act of occupying or taking possession of a building More Definitions → |
| overstock | 1. stock excessively More Definitions → |
| observing | 1. quick to notice; showing quick and keen perception More Definitions → |
| objection | 1. the act of expressing earnest opposition or protest 2. the speech act of objecting More Definitions → |
| outerwear | 1. clothing for use outdoors More Definitions → |
| offspring | 1. the immediate descendants of a person 2. something that comes into existence as a result More Definitions → |
| oxidation | 1. the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction More Definitions → |
| obsession | 1. an irrational motive for performing trivial or repetitive actions, even against your will 2. an unhealthy and compulsive preoccupation with something or someone More Definitions → |
| obedience | 1. the act of obeying; dutiful or submissive behavior with respect to another person 2. the trait of being willing to obey More Definitions → |
| ombudsman | 1. a government appointee who investigates complaints by private persons against the government More Definitions → |
| oversized | 1. larger than normal for its kind More Definitions → |
| obligated | 1. caused by law or conscience to follow a certain course More Definitions → |
| overdrive | 1. drive or work too hard 2. make use of too often or too extensively More Definitions → |
| offending | 1. offending against or breaking a law or rule More Definitions → |
| organiser | 1. someone who enlists workers to join a union 2. a person who brings order and organization to an enterprise More Definitions → |
| outsource | 1. obtain goods or services from an outside supplier; to contract work out More Definitions → |
| originate | 1. come into existence; take on form or shape 2. bring into being More Definitions → |
| obsessive | 1. a person who has obsessions 2. characterized by or constituting an obsession More Definitions → |
| oppressed | 1. burdened psychologically or mentally More Definitions → |
| oxidative | 1. taking place in the presence of oxygen More Definitions → |
| overwrite | 1. write new data on top of existing data and thus erase the previously existing data More Definitions → |
| outskirts | 1. outlying areas (as of a city or town) More Definitions → |
| ovulation | 1. the expulsion of an ovum from the ovary (usually midway in the menstrual cycle) More Definitions → |
| overthrow | 1. the termination of a ruler or institution (especially by force) 2. the act of disturbing the mind or body More Definitions → |
| optometry | 1. the practice of an optometrist More Definitions → |
| obnoxious | 1. causing disapproval or protest More Definitions → |
| overheard | 1. hear, usually without the knowledge of the speakers More Definitions → |
| orthodoxy | 1. the quality of being orthodox (especially in religion) 2. a belief or orientation agreeing with conventional standards More Definitions → |
| onslaught | 1. a sudden and severe onset of trouble 2. (military) an offensive against an enemy (using weapons) More Definitions → |
| overboard | 1. to extremes 2. from on board a vessel into the water More Definitions → |
| olfactory | 1. of or relating to olfaction More Definitions → |
| occlusion | 1. closure or blockage (as of a blood vessel) 2. (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft More Definitions → |
| oblivious | 1. (followed by `to' or `of') lacking conscious awareness of 2. failing to keep in mind More Definitions → |
| orphanage | 1. the condition of being a child without living parents 2. a public institution for the care of orphans More Definitions → |
| outspoken | 1. given to expressing yourself freely or insistently 2. characterized by directness in manner or speech; without subtlety or evasion More Definitions → |
| outrigger | 1. a stabilizer for a canoe; spars attach to a shaped log or float parallel to the hull More Definitions → |
| obscurity | 1. the quality of being unclear or abstruse and hard to understand 2. an obscure and unimportant standing; not well known More Definitions → |
| optically | 1. in an optical manner More Definitions → |
| outfitter | 1. someone who sells men's clothes 2. a shop that provides equipment for some specific purpose More Definitions → |
| optimally | 1. in an optimal and most desirable way More Definitions → |
| overwhelm | 1. overcome, as with emotions or perceptual stimuli 2. charge someone with too many tasks More Definitions → |
| obscenity | 1. the trait of behaving in an obscene manner 2. an offensive or indecent word or phrase More Definitions → |
| overdraft | 1. a draft in excess of the credit balance More Definitions → |
| obstetric | 1. of or relating to or used in or practicing obstetrics More Definitions → |
| overtaken | 1. catch up with and possibly overtake 2. travel past More Definitions → |
| outwardly | 1. with respect to the outside 2. in outward appearance More Definitions → |
| outfitted | 1. provide with (something) usually for a specific purpose 2. furnished with essential equipment for a particular occupation or undertaking occupation More Definitions → |
| overgrown | 1. grow too large 2. become overgrown More Definitions → |
| observant | 1. paying close attention especially to details 2. quick to notice; showing quick and keen perception More Definitions → |
| outgrowth | 1. a natural consequence of development 2. the gradual beginning or coming forth More Definitions → |
| octagonal | 1. of or relating to or shaped like an octagon More Definitions → |
| outermost | 1. situated at the farthest possible point from a center More Definitions → |
| overlying | 1. lie upon; lie on top of 2. kill by lying on More Definitions → |
| overclock | 1. To run a processor (CPU), or any electronic logic device, at a speed higher than is recommended by the manufacturer. More Definitions → |
| outnumber | 1. be larger in number More Definitions → |
| outlander | 1. a person who comes from a foreign country; someone who does not owe allegiance to your country More Definitions → |
| ornithine | 1. an amino acid that does not occur in proteins but is important in the formation of urea More Definitions → |
| occipital | 1. of or relating to the occiput More Definitions → |
| overjoyed | 1. extremely joyful More Definitions → |
| opportune | 1. suitable or at a time that is suitable or advantageous especially for a particular purpose More Definitions → |
| oestrogen | 1. a general term for female steroid sex hormones that are secreted by the ovary and responsible for typical female sexual characteristics More Definitions → |
| overblown | 1. puffed up with vanity 2. past the stage of full bloom More Definitions → |
| obstinate | 1. stubbornly persistent in wrongdoing 2. resistant to guidance or discipline More Definitions → |
| orangutan | 1. large long-armed ape of Borneo and Sumatra having arboreal habits More Definitions → |
| officiate | 1. act in an official capacity in a ceremony or religious ritual, such as a wedding 2. perform duties attached to a particular office or place or function More Definitions → |
| oligarchy | 1. a political system governed by a few people More Definitions → |
| orienting | 1. positioning with respect to a reference system or determining your bearings physically or intellectually More Definitions → |
| overshoot | 1. an approach that fails and gives way to another attempt 2. shoot beyond or over (a target) More Definitions → |
| overpower | 1. overcome by superior force 2. overcome, as with emotions or perceptual stimuli More Definitions → |
| organelle | 1. a specialized part of a cell; analogous to an organ More Definitions → |
| overstate | 1. to enlarge beyond bounds or the truth More Definitions → |
| occlusive | 1. tending to occlude 2. a consonant produced by stopping the flow of air at some point and suddenly releasing it More Definitions → |
| oscillate | 1. be undecided about something; waver between conflicting positions or courses of action 2. move or swing from side to side regularly More Definitions → |
| oppressor | 1. a person of authority who subjects others to undue pressures More Definitions → |
| occultism | 1. the study of the supernatural 2. a belief in supernatural powers and the possibility of bringing them under human control More Definitions → |
| oligopoly | 1. (economics) a market in which control over the supply of a commodity is in the hands of a small number of producers and each one can influence prices and affect competitors More Definitions → |
| overthrew | 1. cause the downfall of; of rulers 2. rule against More Definitions → |
| officiant | 1. a clergyman who officiates at a religious ceremony or service More Definitions → |
| ominously | 1. in an ominous manner More Definitions → |
| otherness | 1. the quality of being not alike; being distinct or different from that otherwise experienced or known More Definitions → |
| overprint | 1. print (additional text or colors) onto an already imprinted paper 2. something added by overprinting More Definitions → |
| obliquely | 1. to, toward or at one side 2. at an oblique angle More Definitions → |
| oxygenase | 1. an oxidoreductase that catalyzes the incorporation of molecular oxygen More Definitions → |
| osteotomy | 1. surgical sectioning of bone More Definitions → |
| obfuscate | 1. make obscure or unclear More Definitions → |
| obtrusive | 1. sticking out; protruding 2. undesirably noticeable More Definitions → |