4-Letter Nouns Starting With O
Here's the list of all the 115 4-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) | |
|---|---|
| over | 1. (cricket) the division of play during which six balls are bowled at the batsman by one player from the other team from the same end of the pitch More Definitions → |
| open | 1. a clear or unobstructed space or expanse of land or water 2. where the air is unconfined More Definitions → |
| once | More Definitions → |
| oral | 1. an examination conducted by spoken communication More Definitions → |
| okay | 1. an endorsement More Definitions → |
| odds | 1. the likelihood of a thing occurring rather than not occurring 2. the ratio by which one better's wager is greater than that of another More Definitions → |
| oven | 1. kitchen appliance used for baking or roasting More Definitions → |
| oval | 1. a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it More Definitions → |
| odor | 1. any property detected by the olfactory system 2. the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form More Definitions → |
| oath | 1. profane or obscene expression usually of surprise or anger 2. a commitment to tell the truth (especially in a court of law); to lie under oath is to become subject to prosecution for perjury More Definitions → |
| opal | 1. a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones More Definitions → |
| onyx | 1. a chalcedony with alternating black and white bands; used in making cameos More Definitions → |
| opus | 1. a musical work that has been created More Definitions → |
| oboe | 1. a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece More Definitions → |
| orca | 1. predatory black-and-white toothed whale with large dorsal fin; common in cold seas More Definitions → |
| ogre | 1. a cruel wicked and inhuman person 2. (folklore) a giant who likes to eat human beings More Definitions → |
| omen | 1. a sign of something about to happen More Definitions → |
| ooze | 1. any thick, viscous matter 2. the process of seeping More Definitions → |
| obit | 1. a notice of someone's death; usually includes a short biography More Definitions → |
| ogle | More Definitions → |
| oxen | 1. domesticated bovine animals as a group regardless of sex or age 2. an adult castrated bull of the genus Bos; especially Bos taurus More Definitions → |
| onus | 1. an onerous or difficult concern More Definitions → |
| ovum | 1. the female reproductive cell; the female gamete More Definitions → |
| oryx | 1. large African antelope with long straight nearly upright horns More Definitions → |
| okra | 1. long green edible beaked pods of the okra plant 2. tall coarse annual of Old World tropics widely cultivated in southern United States and West Indies for its long mucilaginous green pods used as basis for soups and stews; sometimes placed in genus Hibiscus More Definitions → |
| oink | 1. the short low gruff noise of the kind made by hogs More Definitions → |
| oleo | 1. a spread made chiefly from vegetable oils and used as a substitute for butter More Definitions → |
| olla | 1. leaf or strip from a leaf of the talipot palm used in India for writing paper More Definitions → |