7-Letter Nouns Starting With O
Here's the list of all the 429 7-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) | |
|---|---|
| overall | 1. (usually plural) work clothing consisting of denim trousers (usually with a bib and shoulder straps) 2. a loose protective coverall or smock worn over ordinary clothing for dirty work More Definitions → |
| outside | 1. the region that is outside of something 2. the outer side or surface of something More Definitions → |
| opinion | 1. a personal belief or judgment that is not founded on proof or certainty 2. a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof More Definitions → |
| officer | 1. any person in the armed services who holds a position of authority or command 2. someone who is appointed or elected to an office and who holds a position of trust More Definitions → |
| opening | 1. an open or empty space in or between things 2. a ceremony accompanying the start of some enterprise More Definitions → |
| organic | 1. a fertilizer that is derived from animal or vegetable matter More Definitions → |
| outlook | 1. a habitual or characteristic mental attitude that determines how you will interpret and respond to situations 2. belief about (or mental picture of) the future More Definitions → |
| ongoing | More Definitions → |
| outcome | 1. something that results 2. a phenomenon that follows and is caused by some previous phenomenon More Definitions → |
| outline | 1. the line that appears to bound an object 2. a sketchy summary of the main points of an argument or theory More Definitions → |
| offense | 1. a lack of politeness; a failure to show regard for others; wounding the feelings of others 2. a feeling of anger caused by being offended More Definitions → |
| obesity | 1. more than average fatness More Definitions → |
| optimum | 1. most favorable conditions or greatest degree or amount possible under given circumstances More Definitions → |
| offence | 1. the action of attacking an enemy 2. the team that has the ball (or puck) and is trying to score More Definitions → |
| odyssey | 1. a long wandering and eventful journey More Definitions → |
| oblique | 1. any grammatical case other than the nominative 2. a diagonally arranged abdominal muscle on either side of the torso More Definitions → |
| orchard | 1. garden consisting of a small cultivated wood without undergrowth More Definitions → |
| overlap | 1. a representation of common ground between theories or phenomena 2. the property of partial coincidence in time More Definitions → |
| obscure | More Definitions → |
| overlay | 1. protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior 2. a layer of decorative material (such as gold leaf or wood veneer) applied over a surface More Definitions → |
| orbital | More Definitions → |
| outward | More Definitions → |
| outback | 1. the bush country of the interior of Australia More Definitions → |
| outpost | 1. a station in a remote or sparsely populated location 2. a settlement on the frontier of civilization More Definitions → |
| ottoman | 1. thick cushion used as a seat 2. a low seat or a stool to rest the feet of a seated person More Definitions → |
| outrage | 1. a feeling of righteous anger 2. a wantonly cruel act More Definitions → |
| orderly | 1. a soldier who serves as an attendant to a superior officer 2. a male hospital attendant who has general duties that do not involve the medical treatment of patients More Definitions → |
| octopus | 1. tentacles of octopus prepared as food 2. bottom-living cephalopod having a soft oval body with eight long tentacles More Definitions → |
| offeror | 1. someone who presents something to another for acceptance or rejection More Definitions → |
| outsole | 1. the outer sole of a shoe or boot that is the bottom of the shoe and makes contact with the ground More Definitions → |
| oatmeal | 1. porridge made of rolled oats 2. meal made from rolled or ground oats More Definitions → |
| omnibus | 1. an anthology of articles on a related subject or an anthology of the works of a single author 2. a vehicle carrying many passengers; used for public transport More Definitions → |
| opacity | 1. the phenomenon of not permitting the passage of electromagnetic radiation 2. incomprehensibility resulting from obscurity of meaning More Definitions → |
| oxidase | 1. any of the enzymes that catalyze biological oxidation More Definitions → |
| offbeat | 1. an unaccented beat (especially the last beat of a measure) More Definitions → |
| oneness | 1. the quality of being united into one More Definitions → |
| outflow | 1. the discharge of a fluid from some container 2. the process of flowing out More Definitions → |
| ostrich | 1. a person who refuses to face reality or recognize the truth (a reference to the popular notion that the ostrich hides from danger by burying its head in the sand) 2. fast-running African flightless bird with two-toed feet; largest living bird More Definitions → |
| operand | 1. a quantity upon which a mathematical operation is performed More Definitions → |
| ovation | 1. enthusiastic recognition (especially one accompanied by loud applause) More Definitions → |
| origami | 1. the Japanese art of folding paper into shapes representing objects (e.g., flowers or birds) More Definitions → |
| orbiter | 1. man-made equipment that orbits around the earth or the moon More Definitions → |
| overrun | 1. too much production or more than expected More Definitions → |
| osmosis | 1. (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal More Definitions → |
| oregano | 1. aromatic Eurasian perennial 2. pungent leaves used as seasoning with meats and fowl and in stews and soups and omelets More Definitions → |
| organza | 1. a fabric made of silk or a silklike fabric that resembles organdy More Definitions → |
| ordinal | 1. the number designating place in an ordered sequence More Definitions → |
| outcast | 1. a person who is rejected (from society or home) More Definitions → |
| orifice | 1. an aperture or hole that opens into a bodily cavity More Definitions → |
| octagon | 1. an eight-sided polygon More Definitions → |
| overuse | 1. exploitation to the point of diminishing returns More Definitions → |
| ocarina | 1. egg-shaped terracotta wind instrument with a mouthpiece and finger holes More Definitions → |
| opulent | More Definitions → |
| outlier | 1. a person who lives away from his place of work 2. an extreme deviation from the mean More Definitions → |
| outfall | 1. the outlet of a river or drain or other source of water More Definitions → |
| obelisk | 1. a stone pillar having a rectangular cross section tapering towards a pyramidal top 2. a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used More Definitions → |
| oxidant | 1. a substance that oxidizes another substance More Definitions → |
| oddball | 1. a person with an unusual or odd personality More Definitions → |
| omicron | 1. the 15th letter of the Greek alphabet More Definitions → |
| oratory | 1. addressing an audience formally (usually a long and rhetorical address and often pompous) More Definitions → |
| oilseed | 1. any of several seeds that yield oil More Definitions → |
| offside | 1. (sport) the mistake of occupying an illegal position on the playing field (in football, soccer, ice hockey, field hockey, etc.) More Definitions → |
| obverse | 1. the more conspicuous of two alternatives or cases or sides 2. the side of a coin or medal bearing the principal stamp or design More Definitions → |
| olivine | 1. a mineral consisting of magnesium iron silicate; a source of magnesium More Definitions → |
| outcrop | 1. the part of a rock formation that appears above the surface of the surrounding land More Definitions → |
| ouguiya | 1. the basic unit of money in Mauritania More Definitions → |
| outturn | 1. what is produced in a given time period More Definitions → |
| oxalate | 1. a salt or ester of oxalic acid More Definitions → |
| opossum | 1. small furry Australian arboreal marsupials having long usually prehensile tails 2. nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America More Definitions → |
| oration | 1. an instance of oratory More Definitions → |
| outcall | More Definitions → |
| organon | 1. a system of principles for philosophic or scientific investigations; an instrument for acquiring knowledge More Definitions → |
| overage | 1. a surplus or excess of money or merchandise that is actually on hand and that exceeds expectations More Definitions → |
| operant | More Definitions → |
| ousting | 1. the act of ejecting someone or forcing them out More Definitions → |