4 Letter Words That Start With O (2023)

over

Adjective : Discontinued; ended or concluded.

Verb : Thoroughly; completely; from beginning to end.

Verb : (often in compounds) To an excessive degree; overly.

open

Adjective : Able to be accessed.

Adjective : Able to have something pass through or along it.

Adjective : (of a body part) not covered, showing what is inside

once

Verb : (frequency) One and only one time.

Verb : (temporal location) Formerly; during some period in the past.

Verb : (chiefly obsolete) At any time; ever.

only

Adjective : Alone in a category.

Adjective : Singularly superior; the best.

Adjective : Without sibling; without a sibling of the same gender.

onus

Noun : A legal obligation.

Noun : Burden of proof, onus probandi.

Noun : Stigma.

onto

Adjective : (mathematics, of a function) Assuming each of the values in its codomain; having its range equal to its codomain.

odds

Noun : The ratio of the probability of an event happening to that of it not happening.

Noun : The ratio of winnings to stake in betting situations.

Noun : (chess) An advantage given to a weaker opponent in order to equalize the game when playing casually, usually by removing one of the stronger player's pieces or by giving the weaker player more time.

opus

Noun : (music) A work of music or set of works with a specified rank in an ordering of a composer's complete published works.

Noun : A work, especially of art.

omen

Noun : Something which portends or is perceived to portend either a good or evil event or circumstance in the future, or which causes a foreboding; a portent or augury.

Noun : A thing of prophetic significance.

Verb : (transitive) To be an omen of.

omit

Verb : (transitive) To leave out or exclude.

Verb : (intransitive) To fail to perform.

Verb : (transitive, law, of text) To delete or remove; to strike.

ogle

Verb : (transitive, intransitive) To stare at (someone or something), especially impertinently, amorously, or covetously.

Noun : An impertinent, flirtatious, amorous or covetous stare.

Noun : (Polari, usually in the plural) An eye.

otto

Noun : A male given name from the Germanic languages.

Noun : An unincorporated community in Clark County, Indiana.

Noun : A town in Cattaraugus County, New York.

oath

Noun : A solemn pledge or promise that invokes a deity, a ruler, or another entity (not necessarily present) to attest the truth of a statement or sincerity of one's desire to fulfill a contract or promise.

Noun : A statement or promise which is strengthened (affirmed) by such a pledge.

Noun : A light, irreverent or insulting appeal to a deity or other entity.

oven

Noun : A chamber used for baking or heating.

Verb : (transitive) To cook in an oven

omni

Noun : (informal, veganism) A person who is not vegan; one with no particular dietary restrictions.

onyx

Noun : (mineralogy) A banded variety of chalcedony, a cryptocrystalline form of quartz.

Noun : A jet-black color, named after the gemstone.

Noun : Any of various lycaenid butterflies of the genus Horaga.

orca

Noun : A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.

okay

Noun : Alternative spelling of OK [Endorsement; approval.]

Verb : Alternative spelling of OK [(transitive) To approve.]

Adjective : Alternative spelling of OK [All right, acceptable, permitted.]

ooze

Noun : Tanning liquor, an aqueous extract of vegetable matter (tanbark, sumac, etc.) in a tanning vat used to tan leather.

Noun : An oozing, gentle flowing, or seepage, as of water through sand or earth.

Noun : (obsolete) Secretion, humour.

oral

Adjective : (pharmacology) Done or taken by the mouth.

Adjective : (phonetics, of a speech sound) Pronounced by the voice resonating in the mouth, as the vowels in English.

Adjective : (psychoanalysis, in Freudian theory) Relating to or denoting a stage of infantile psychosexual development during which libidinal gratification is derived from intake (as of food), by sucking, and later by biting.

oreo

Noun : (foods) A cookie made of two wafers joined with a sugary filling, particularly a Nabisco cookie with two alkalized cocoa-powder wafers around a white creme filling.

Noun : (US, derogatory, ethnic slur) A black person considered to have overly assimilated to white culture, a black race traitor.

Noun : Alternative letter-case form of Oreo. [(foods) A cookie made of two wafers joined with a sugary filling, particularly a Nabisco cookie with two alkalized cocoa-powder wafers around a white creme filling.]

oval

Noun : An elongated round shape resembling an egg or ellipse.

Noun : A thing having such a shape, such as an arena.

Noun : (mathematics) In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point.

obey

Verb : (transitive) To do as ordered by (a person, institution etc), to act according to the bidding of.

Verb : (intransitive) To do as one is told.

Verb : (obsolete, intransitive) To be obedient, compliant (to a given law, restriction etc.).

okra

Noun : The edible immature mucilaginous seed pod (properly, capsule) of the Abelmoschus esculentus.

Noun : The flowering mallow plant Abelmoschus esculentus itself, now commonly grown in the tropics and warmer parts of the temperate zones.

odor

Noun : Any smell, whether fragrant or offensive.

Noun : (figuratively) A strong, pervasive quality.

Noun : (figuratively, uncountable) Esteem.

odah

Noun : od

ogre

Noun : (mythology) A type of brutish giant from folk tales that eats human flesh.

Noun : (figuratively) A brutish man reminiscent of the mythical ogre.

Noun : A town in central Latvia

orgy

Noun : Originally, secret rites or ceremonies, typically involving riotous and dissolute behaviour, including dancing, drunkenness and indiscriminate sexual activity, undertaken in honour of various pagan gods or goddesses (such as Attis, Bacchus, Ceres, Dionysus, Osiris, etc). [from 16th c.]

Noun : A gathering of people to engage in group sex.

Noun : Excessive indulgence in a specified activity.

opal

Noun : (mineralogy) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO₂·nH₂O.

Noun : (gemology) A precious gem, an iridescent gemstone found in the opal-silica mineral substrate (potch)

Noun : (biology, genetics, biochemistry) A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."

oust

Verb : (transitive) To expel; to remove.

olio

Noun : A rich, thick, Spanish stew consisting of meat and vegetables.

Noun : (figuratively) A medley or mixture; a hotchpotch.

Noun : (figuratively) A collection of various musical, theatrical or other artistic works; a miscellany.

otic

Adjective : (anatomy) Of, relating/pertaining to, or located near the ear.

oner

Noun : (informal) An extraordinary individual.

Noun : A small marble of little worth in children's games.

Noun : (UK) A conker that has won one match.

oleo

Noun : (aviation) A type of energy-absorbing landing gear strut in which sudden compression or extension of the strut causes a gas-filled chamber to push or pull a piston which forces oil through a small orifice, resulting in absorption of energy through viscous effects.

Noun : (US) The various fats and oils that go into the making of margarine.

Noun : (US, dated) Margarine.

ouze

Noun : (UK dialectal) Mud.

ogee

Noun : (architecture) A double curve in the shape of an elongated S; an object of that shape.

Noun : (architecture) A pointed arch made from two ogees.

Noun : (mathematics) An inflection point.

odin

Noun : (Norse mythology and paganism) A major Germanic god, often described as chief of the pantheon, in his Norse form a member of the Æsir, married to Frigg and associated with knowledge, poetry and war. Wednesday refers to him by way of interpretatio germanica.

osha

Noun : Ligusticum porteri, a perennial herb found in parts of the Rocky Mountains and northern Mexico.

Noun : (US) Initialism of Occupational Safety and Health Administration.

oman

Noun : A country in the Middle East. Official name: Sultanate of Oman

oboe

Noun : A soprano and melody wind instrument in the modern orchestra and wind ensemble. It is a smaller instrument and generally made of grenadilla wood. It is a member of the double reed family.

ones

Noun : (sports) A senior or first team (as opposed to a reserves team).

Noun : (UK, prison slang) The cells located on the ground floor.

obit

Noun : (archaic) Death of a person.

Noun : (Christianity, historical) A mass or other service held for the soul of a dead person.

Noun : A record of a person's death.

ovum

Noun : (cytology) The female gamete in animals; the egg cell.

omar

Noun : (Islam) Omar bin al-Khattab

Noun : A male given name from Arabic

oryx

Noun : Any of several antelopes, of the genus Oryx, native to Africa, which have long, straight horns

oric

Noun : the name used by UK-based Tangerine Computer Systems for a series of 6502-based home computers sold in the 1980s, primarily in Europe.

olla

Noun : A cooking-pot or earthenware jar used in Spain and Spanish-speaking countries.

Noun : A pot used for cooling water by evaporation in Latin America.

Noun : An unglazed earthenware pot, buried to provide slow steady irrigation.

ouch

Noun : A surname.

Noun : Alternative form of ouche [(poetic) A brooch or clasp for fastening a piece of clothing together, especially when valuable or set with jewels.]

otis

Noun : A surname transferred from the given name, notably of the American revolutionary hero James Otis and the innovator and industrialist Elisha Otis.

Noun : (chiefly US) A male given name from the Germanic languages, transferred from the surname.

Noun : An Otis elevator.

ossa

Noun : A surname.

Noun : A village in Larissa regional unit, Greece.

Noun : A village in Thessaloniki regional unit, Greece.

oche

Noun : (darts) A line behind which a player's front foot must be placed when throwing a dart.

oops

Noun : A minor mistake or unforseen difficulty.

Verb : (intransitive, colloquial) To make a mistake; to blunder.

Noun : Abbreviation of object-oriented programming system.

oder

Noun : A river in central Europe, that flows from the Czech Republic through Poland and Germany to the Baltic Sea.

opah

Noun : Any of various large, colourful, deep-bodied pelagic fish of the family Lamprididae.

olid

Adjective : (rare) evil-smelling; fetid.

oats

Noun : A mass of oat plants (genus Avena, especially Avena sativa).

Noun : Seeds of an oat plant, especially prepared as food.

oink

Noun : The sound made by a pig, or an imitation thereof.

Verb : (intransitive) Of a pig or in imitation thereof, to make its characteristic sound.

orzo

Noun : A form of pasta the size and shape of grains of rice or barley; often used in soups.

oxen

Adjective : Of, relating to, or resembling an ox; oxlike

oahu

Noun : The third-largest island of Hawaii, included in the City and County of Honolulu.

orle

Noun : (heraldry) a bordure that runs around the outline of a shield without touching the edge

Noun : (heraldry) the wreath, or chaplet, surmounting or encircling the helmet of a knight and bearing the crest; a torse

Noun : (architecture) a fillet under the ovolo of a capital

ovid

Noun : A 1st century BC Roman poet.

Noun : A male given name from Latin of mainly historic use.

Noun : A statutory town in Sedgwick County, Colorado.

oast

Noun : (Britain) A kiln for drying tobacco, malt and especially hops.

orfe

Noun : A fish, the ide, Leuciscus idus.

ohio

Noun : A state of the United States. Capital and largest city: Columbus.

Noun : A river in the United States, flowing 981 miles from the confluence of the Allegheny and Monongahela at Pittsburgh into the Mississippi at Cairo, Illinois.

Noun : A town in New York.

owen

Noun : A male given name from Welsh, an anglicization of Welsh Owain.

Noun : A male given name from Irish, an anglicization of Irish Eoghan.

Noun : A surname from Welsh [in turn originating as a patronymic] derived from the given name.

omsk

Noun : An oblast of Russia.

Noun : A city, the administrative center of Omsk Oblast, Russia, the seventh-largest in the country by population.

opec

Noun : Acronym of Organization of Petroleum Exporting Countries.

oslo

Noun : A county and municipality, the capital city of Norway. Formerly called Christiania and Kristiania.

Noun : A tiny city in Marshall County, in northwest Minnesota, United States.

Noun : An unincorporated community in Vernon Township, Dodge County, Minnesota, United States.

odom

Noun : A surname from Middle English.

ouzo

Noun : (uncountable) An anise-flavoured aperitif, originating in Greece.

Noun : (countable) A serving of this drink.

ouse

Noun : River Ouse, Yorkshire: A river in North Yorkshire and East Riding of Yorkshire.

Noun : River Ouse, Sussex: A river in both West Sussex and East Sussex.

Noun : River Great Ouse, Northamptonshire and East Anglia.

opie

Noun : A surname from Cornish.

outs

Verb : Away from the inside, centre or other point of reference.

Verb : Away from home or one's usual place.

Verb : Outside; not indoors.

oily

Adjective : Relating to or resembling oil.

Adjective : Covered with or containing oil.

Adjective : (figuratively) Excessively friendly or polite but insincere.

olga

Noun : A female given name from Russian.

Noun : A transliteration of the Russian female given name О́льга (Ólʹga).

omer

Noun : (historical units of measure) A former small Hebrew unit of dry volume equal to about 2.3 L or 2.1 quarts.

Noun : A vessel of one omer.

Noun : (Judaism) The sheaf of barley offered on the second day of Passover.

orly

Noun : A city and commune of the department of the Val-de-Marne, region of Île-de-France, France.

Noun : (by ellipsis) Paris-Orly Airport.

opps

Noun : (slang, among criminal gangs) An opponent; an enemy; the opposition

Noun : A city in Alabama.

Noun : Initialism of other people's problems.

opel

Noun : Opel Automobile GmbH, usually shortened to Opel, is a German automobile manufacturer which has been a subsidiary of Stellantis since 16 January 2021.

Noun : a 1988 album compiled from recordings made by former Pink Floyd frontman Syd Barrett between 1968 and 1970.

Noun : Opel Automobile is a German car manufacturer.

oyez

Noun : A cry of "oyez".

Verb : (transitive, rare) To proclaim with a cry of "oyez".

oozy

Adjective : Of or pertaining to the quality of something that oozes.

obol

Noun : (historical) A silver coin of Ancient Greece.

Noun : (historical) A weight, equivalent to one sixth of a drachma.

oems

Noun : A company that produces parts to be sold under another company's brand.

Noun : A value-added reseller; company selling goods assembled from other companies' parts.

Noun : All makers prior to initial retail sale, in contrast to aftermarket.

oran

Noun : A city and port in Algeria.

Noun : A male given name from Irish.

odea

Noun : Alternative form of odeon [An ancient Greek or Roman building used for performances of music and poetry.]

ours

Verb : Misspelling of are.

ojai

Noun : A city in Ventura County, California, United States.

oort

Noun : A surname from Dutch.

olde

Adjective : Archaic spelling of old. [Of a living being, having lived for most of the expected years.]

oyer

Noun : (law, archaic) A hearing in a civil case which is based on the content of a document, in which the plaintiff is required to produce the document.

ofay

Noun : (US, ethnic slur, slang) A white person.

Adjective : (US, ethnic slur, slang) White; white-skinned.

obie

Noun : (television, film) A small lamp positioned over the camera, sometimes used to produce catchlights in the subject's eyes.

Noun : An Off-Broadway Theater Award, given annually to theatre artists and groups in New York City.

Noun : A surname from French.

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