9-Letter Nouns Starting With O
Here's the list of all the 668 9-Letter Nouns 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 Nouns (with Definitions and Examples) | |
|---|---|
| operation | 1. the state of being in effect or being operative 2. a business especially one run on a large scale More Definitions → |
| objective | 1. the goal intended to be attained (and which is believed to be attainable) 2. the lens or system of lenses in a telescope or microscope that is nearest the object being viewed 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 → |
| overnight | 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 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 → |
| 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 | 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 → |
| overdrive | 1. the state of high or excessive activity or productivity or concentration 2. a high gear used at high speeds to maintain the driving speed with less output power 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 | More Definitions → |
| originate | More Definitions → |
| obsessive | 1. a person who has obsessions More Definitions → |
| overwrite | 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 → |
| 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 → |
| olfactory | 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 → |
| orphanage | 1. the condition of being a child without living parents 2. a public institution for the care of orphans 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 → |
| outfitter | 1. someone who sells men's clothes 2. a shop that provides equipment for some specific purpose More Definitions → |
| overwhelm | 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 → |
| observant | More Definitions → |
| outgrowth | 1. a natural consequence of development 2. the gradual beginning or coming forth More Definitions → |
| outnumber | 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 | 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 → |
| orangutan | 1. large long-armed ape of Borneo and Sumatra having arboreal habits More Definitions → |
| officiate | More Definitions → |
| oligarchy | 1. a political system governed by a few people More Definitions → |
| overshoot | 1. an approach that fails and gives way to another attempt More Definitions → |
| overpower | More Definitions → |
| organelle | 1. a specialized part of a cell; analogous to an organ More Definitions → |
| overstate | More Definitions → |
| occlusive | 1. a consonant produced by stopping the flow of air at some point and suddenly releasing it More Definitions → |
| oscillate | 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 → |
| officiant | 1. a clergyman who officiates at a religious ceremony or service More Definitions → |
| otherness | 1. the quality of being not alike; being distinct or different from that otherwise experienced or known More Definitions → |
| overprint | 1. something added by overprinting More Definitions → |
| oxygenase | 1. an oxidoreductase that catalyzes the incorporation of molecular oxygen More Definitions → |
| osteotomy | 1. surgical sectioning of bone More Definitions → |
| obfuscate | More Definitions → |