4 Letter Words That Start With O

open

Adjective : (usually not comparable) Physically unobstructed, uncovered, etc.

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

Adjective : Not covered, sealed, etc.; having an opening or aperture showing what is inside.

onus

Noun : A legal obligation.

Noun : (law) Burden of proof, onus probandi.

Noun : Stigma.

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.

ooch

Verb : (transitive)

Verb : (also reflexive) To move or slide (oneself or someone, or something) by a small amount.

Verb : (also reflexive, figurative) To cause (oneself or someone, or something) to change or progress by a small amount or in small increments.

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.

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.

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.

only

Adjective : Alone in a category.

Adjective : Singularly superior; the best.

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

odor

Noun : Any smell, whether fragrant or offensive.

Noun : (figuratively) A strong, pervasive quality.

Noun : (figuratively, uncountable) Esteem.

onde

Noun : (obsolete) envy; hatred; malice

Noun : (UK dialectal, Northern England, Scotland) breath

Verb : (intransitive, dialectal or obsolete) To breathe; breathe on.

ogre

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

Noun : (figuratively) A cruel person.

Noun : A city in central Latvia

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.).

orgy

Noun : Originally, secret rites or ceremonies, typically involving riotous and dissolute behavior, including dancing, drunkenness and indiscriminate sexual activity, undertaken in honor 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.

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 : (agriculture) An unglazed earthenware pot, buried to provide slow steady irrigation.

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.

oxic

Adjective : (obsolete) Sharp; pointy.

Adjective : Containing oxygen.

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.

odal

Noun : (law, historical) Among the early and medieval Teutonic peoples, especially Scandinavians, the heritable land held by the various odalmen constituting a family or kindred of freeborn tribesmen.

Noun : The ownership of such land.

Adjective : Of or relating to odal land.

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.

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.

onza

Noun : (historical) A traditional Spanish unit of mass, equivalent to about 28.76 g.

Noun : (cryptozoology) A cryptid in Mexican folklore said to be similar to a cougar or jaguarundi but especially aggressive.

okay

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

Verb : Alternative spelling of OK [(transitive) To approve; to accept; to acquiesce to.]

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

oral

Adjective : (relational) Relating to the mouth.

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.

over

Adjective : Finished; ended; concluded.

Adjective : (botany) Of a flower: wilting or withering.

Adjective : (informal, of an ongoing situation) Hopeless; irrecoverable.

oily

Adjective : Covered with or containing oil.

Adjective : Resembling oil.

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

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.

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 : The colour of opal: any shade of blue with bright flecks of other colours, such as white, yellow, and red.

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.

oust

Verb : (transitive) To expel; to remove.

odic

Adjective : Of or pertaining to odes.

Adjective : (pseudoscience, historical) Synonym of odylic (“of or pertaining to the od or odyle (“a hypothetical force or natural power, now proved not to exist, which was supposed by Carl Reichenbach and others to inhere in certain people and produce phenomena such as animal magnetism and mesmerism, and to be developed by various agencies, as by chemical or vital action, heat, light, magnets, etc.”)”)

opia

Noun : Alternative form of hupia [In Taino mythology, the spirit of a person who has died; a ghost.]

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.

otic

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

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 who has overly assimilated into 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.]

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.

ordo

Noun : (music) A musical phrase constructed from one or more statements of one modal pattern and ending in a rest.

Noun : (Roman Catholicism) A calendar which prescribes the Mass and office which is to be celebrated each day.

Noun : (biology, taxonomy) A category in the classification of organisms, ranking below classis and above familia.

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.

otto

Noun : A male given name from the Germanic languages.

Noun : A surname from the Germanic languages

Noun : A place in the United States

omsk

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

Noun : An oblast of Russia.

oahu

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

olde

Adjective : Archaic spelling of old. [Of an object, concept, relationship, etc., having existed for a relatively long period of time.]

Noun : Alternative form of Old [A surname.]

oppo

Noun : (countable, UK, slang) A friend, associate or colleague.

Noun : (uncountable, US, politics, informal) Research into one's opponent's family, friends, and past, which aims to uncover activities or interests which embarrass or discredit them.

osha

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

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

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.

ouch

Noun : (informal) Something that causes discomfort or pain.

Verb : (intransitive) To exclaim "ouch!" in discomfort or pain.

Noun : A surname.

ovid

Noun : A 1st century BC Roman poet.

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

Noun : A number of places in the United States:

oryx

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

oops

Noun : A minor mistake or unforeseen difficulty.

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

Noun : Abbreviation of object-oriented programming system.

oxen

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

oyez

Noun : A cry of "oyez".

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

ossa

Noun : A surname.

Noun : A village in Larissa regional unit, Greece.

Noun : A village in Thessaloniki regional unit, Greece.

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.

olid

Adjective : (rare) evil-smelling; fetid.

owed

Adjective : That owes.

orch

Noun : Abbreviation of orchestra. [(music) A large group of musicians who play together on various instruments, usually including some from strings, woodwind, brass and/or percussion; the instruments played by such a group.]

oose

Noun : (Scotland) Fluff, particularly from a textile source such as cotton or wool.

Noun : (US) Synonym of yucca.

Noun : (software) Acronym of object-oriented software engineering.

obdt

Adjective : (obsolete) Abbreviation of obedient, at one time used in correspondence. [Willing to comply with the commands, orders, or instructions of those in authority; biddable.]

oost

Noun : A river in Germany.

Noun : A resort in Suriname.

ogun

Noun : A male given name from Yoruba.

Noun : An orisha in the Yoruba religion, the god of war and technology.

Noun : A surname originating as a patronymic.

otra

Noun : the largest river in the Sørlandet region of Norway.

ocam

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.

onto

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

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.

Noun : A mountain on Baffin Island, Canada

oozy

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

oran

Noun : A city, port, and province of Algeria.

Noun : A male given name from Irish.

oder

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

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.

outs

Verb : Away from the inside or centre.

Verb : Away from, or at a distance from, some point of reference or focus.

Verb : Specifically, away from home or one's usual place.

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.

ofay

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

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

orfe

Noun : A fish, the ide, Leuciscus idus.

onan

Noun : (biblical) The second son of Judah.

Noun : (rare) A male given name from Hebrew.

offa

Verb : Pronunciation spelling of offer. [(intransitive) To propose or express one's willingness (to do something).]

orby

Adjective : (obsolete) having characteristics of an orb

orsk

Noun : A city in Orsk, Orenburg Oblast, Asian Russia, Russia

Noun : A municipality, an okrug of Orenburg Oblast, Asian Russia, Russia

Noun : A village in Gmina Rudna district, Lubin, Lower Silesia, Poland

owre

Noun : Obsolete form of hour. [(time) A unit of time of one twenty-fourth of a day (sixty minutes).]

Noun : Obsolete form of oar. [A type of lever used to propel a boat, having a flat blade at one end and a handle at the other, and pivoted in a rowlock atop the gunwale, whereby a rower seated in the boat and pulling the handle can pass the blade through the water by repeated strokes against the water's resistance, thus moving the boat.]

Noun : Obsolete form of ore. [Rock or other material that contains valuable or utilitarian materials; primarily a rock containing metals or gems for which it is typically mined and processed.]

opts

Verb : (intransitive) To choose; select.

Noun : (linguistics) Abbreviation of Old Portuguese. [Synonym of Old Galician-Portuguese]

Noun : Initialism of occupied Palestinian territories.

orra

Adjective : (now Scotland) Superfluous; odd, unmatched, left over.

Adjective : (now Scotland) Of people: idle, unemployed, disreputable.

outa

Noun : (South Africa) An old black man.

odra

Noun : a line of computers manufactured in Wrocław, Poland.

Noun : a river in central Croatia.

Noun : (Oder river in Polish) a Polish monthly art and culture magazine which has the reputation of an opinion-maker.

olim

Noun : A surname from Portuguese.

odum

Noun : Synonym of mvule ("a tree of species Milicia excelsa")

Noun : A surname.

Noun : A town in Wayne County, Georgia, United States.

orse

Verb : (law, British) otherwise.

Adjective : (law, British) otherwise.

ofan

Noun : Alternative form of ophan [A member of an order of wheel-like angels.]

ohia

Noun : Either of two flowering trees of the myrtle family, especially

Noun : in Hawaii: the lehua, Metrosideros polymorpha (native to Hawaii)

Noun : A Malay apple tree (Syzygium malaccense), (native to Southeast Asia, introduced throughout the tropics).

oldy

Noun : Alternative spelling of oldie [(informal) Something or someone old.]

owie

Noun : (colloquial, Canada, US, childish) A painful but minor injury.

osdd

Noun : (psychiatry) Initialism of other specified dissociative disorder. [(psychiatry) A mental health diagnosis which fits the DSM-5 criteria for a dissociative disorder, but does not meet criteria for identified subtypes.]

oley

ongo

Verb : To be ongoing (occurring, happening); to last, proceed or continue.

ocom

ogni

ouns

Noun : (archaic, dialectal) Wounds, especially the wounds of Christ on the cross.

ovoo

Noun : (religion) A shamanistic cairn found in Mongolia, usually made from rocks or wood and found on or around mountains.

ovum

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

oven

Noun : A chamber used for baking or heating.

Noun : (colloquial, figurative) A very hot place.

Verb : (transitive, colloquial, informal) To cook in an oven.

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, Pennsylvania through Ohio, West Virginia, Kentucky, Indiana and Illinois along state borders and emptying into the Mississippi at Cairo, Illinois.

Noun : A locale in the United States; named for the state:

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.

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