English words: O

453 words under O; 101–200 on this page.

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• offense noun…
  An offense is a wrong that someone does, a bad action or a crime.
• offensive adjective (offensive words, more offensive); noun…
  Rude or insulting, likely to upset people.
• offensiveness noun (offensiveness, uncountable)
  Offensiveness is the quality of being rude or hurtful, so that it upsets or insults people.
• offer verb (offer, offers, offered, offering); noun…everyday · Jewish tradition
  To offer is to say you will give something to someone, or to hold it out for them to take.
• offereth verb, old form of «offers» (he, she, it)
  «offereth» means «offers», a form of «offer»: To offer is to say you will give something to someone, or to hold it out for them to take.
• offering noun (an offering, offerings); verb form…everyday · Jewish tradition
  An offering is something you give, especially as a gift.
• office noun (an office, offices)everyday · Jewish tradition
  An office is a room or building where people work at desks, often with computers and papers.
• officer noun (an officer, officers)everyday · Jewish tradition
  An officer is a police officer, a person whose job is to keep people safe and make them obey the law.
• official adjective (official); noun (an official, officials)
  Official means approved by people in charge, like a government, school or organisation.
• officially adverb (officially)
  Officially means in a way that is approved by people in charge, according to the rules or the law.
• officiate verb (officiate, officiates, officiated, officiating)
  To officiate at a wedding, funeral or service is to lead it as a priest, minister or official.
• officious adjective
  Officious means too eager to give help or orders when nobody asked for them.
• offshoot noun (offshoot, offshoots)Jewish tradition
  An offshoot is a branch or shoot that grows out from the main stem of a plant.
• offshore adjective (offshore); adverb (offshore)
  Offshore means in the sea, away from the coast.
• offside adjective and adverb (offside); noun…
  In a position on the field that the rules don't allow, usually too far forward, ahead of the ball or the other team's last defender.
• offspring noun (offspring — same form for one and many)everyday · Jewish tradition
  Offspring are the young of an animal or plant: its babies or seeds.
• oft adverb (old use; no forms)Jewish tradition
  Oft means often, many times.
• often adverb (often, more often, most often; also oftener)everyday · Jewish tradition
  Often means many times.
• oftentimes adverbJewish tradition
  Many times; often.
• ogre noun (ogre, ogres; feminine «ogress»)
  An ogre is a huge, frightening giant in stories who eats people.
• ogress noun (ogress, ogresses)
  An ogress is a female ogre, a huge, frightening giantess in stories who eats people.
• oil noun (oil — uncountable; oils — kinds of oil); verb…everyday · Jewish tradition
  A thick, slippery liquid that does not mix with water, from plants or animals, used in cooking: olive oil.
• oilbird noun (an oilbird, oilbirds)
  A brown, night-flying bird of South America and Trinidad that lives in caves, eats fruit and finds its way in the dark by clicking, a bit…
• oily adjective (oily, oilier, oiliest)
  Covered with oil or containing a lot of oil: «oily hands», «oily fish».
• oink noun (an oink, oinks); verb (oink, oinks, oinked, oinking)…
  An oink is the grunting sound a pig makes.
• ointment noun (an ointment, ointments; ointment — uncountable)everyday · Jewish tradition
  A smooth, greasy cream rubbed on the skin to heal cuts, burns, rashes or sore places.
• oireachtas noun (the Oireachtas) — (Ireland, a name)
  The national parliament of Ireland, made of the President, the Dáil (lower house) and the Seanad (Senate).
• ok adjective and adverb (OK, okay); exclamation (OK!); verb…
  All right; acceptable; good enough: «Is it OK if I sit here?».
• okapi noun (an okapi, okapis)
  An okapi is a shy African forest animal with a brown body and black-and-white stripes on its legs, like a zebra's.
• okay adjective (okay, also OK); adverb (okay); exclamation…
  Okay means all right, fine, not hurt or not upset: are you okay?
• ola fragment or name — not a common English word
  Not an English word on its own.
• old adjective (old, older, oldest; elder, eldest for family)…everyday · Jewish tradition
  Old tells how long someone or something has lived or been: «Tom is 7 years old».
• olden adjective…
  Olden means belonging to the long-ago past; «in the olden days» means a long time ago.
• older adjective (comparative of old)everyday · Jewish tradition
  Older means having lived more years than someone else.
• olfaction noun (olfaction — uncountable)
  The sense of smell, or the act of smelling.
• olive noun (an olive, olives; olive, uncountable for colour/oil)…everyday · Jewish tradition
  An olive is a small oval fruit, green or black, with a stone inside, that grows on olive trees and is eaten or pressed for oil.
• olm noun (an olm, olms)
  An olm is a pale, blind salamander (an amphibian) that lives in dark underground cave waters in southern Europe, especially Slovenia and…
• olympiad noun (olympiad, olympiads)
  An olympiad is a contest where pupils solve hard problems, for example in maths, physics or chess.
• olympian adjective (also noun: an Olympian)
  Olympian means belonging to the gods who lived on Mount Olympus in Greek stories.
• olympic adjective (Olympic, usually with capital O); noun…
  Olympic means about the Olympic Games, the biggest international sports competition, held every four years in summer and winter versions.
• omega noun (omega, Ω, ω)
  Omega is the last letter of the Greek alphabet, written Ω or ω.
• omelet noun…
  An omelet is eggs beaten up and cooked flat in a pan, often with cheese or herbs.
• omelette noun (an omelette, omelettes; also omelet)
  An omelette is a dish of beaten eggs cooked flat in a frying pan, often folded over a filling such as cheese, ham or vegetables.
• omen noun (an omen, omens)
  A sign or event that some people believe shows that something good or bad will happen in the future.
• ominous adjective (more ominous, most ominous)
  Ominous means showing that something bad is about to happen; it is a warning sign.
• omission noun (an omission, omissions)everyday · Jewish tradition
  Something that has been left out or not done.
• omit verb (omit, omits, omitted, omitting)everyday · Jewish tradition
  To leave something out, on purpose or by mistake.
• omnibus noun (an omnibus, omnibuses); adjective (an omnibus edition)
  A book or TV programme that puts several stories or episodes together in one.
• omnipotent adjectiveJewish tradition
  Having power over everything, able to do all things.
• omnivore noun (an omnivore, omnivores); adjective form: omnivorous
  An omnivore is an animal that eats both plants and other animals.
• on preposition, adverb; adjective…everyday · Jewish tradition
  On means touching the top or side of something: on the table, on the wall.
• once adverb (once); conjunction (once); noun (the once — casual)everyday · Jewish tradition
  Once means one time.
• oncoming adjective (oncoming)
  Coming towards you or moving nearer: «oncoming traffic», «an oncoming storm».
• one number (one, ones); pronoun (one, ones; one another)…everyday · Jewish tradition
  One is the number 1, the first and smallest whole number above zero.
• oneida noun (Oneida, the Oneida); adjective (Oneida) (a name)
  A Native American people, one of the Six Nations of the Haudenosaunee (Iroquois Confederacy), from what is now New York State; also their…
• ongoing adjectiveJewish tradition
  Still happening and not finished yet.
• onion noun (an onion, onions)everyday · Jewish tradition
  A round vegetable with layers, papery brown, red or white skin and a strong smell and taste, used in cooking.
• online adjective (online); adverb (online)everyday · Jewish tradition
  Connected to the internet or done on it: "online games".
• onlooker noun (an onlooker, onlookers)
  An onlooker is a person who watches something happen but does not take part, especially an accident, fight or event in the street.
• only adverb (only); adjective (only); conjunction…everyday · Jewish tradition
  Only means no more than, or just one.
• onomatopoeia noun…
  Onomatopoeia is when a word sounds like the noise it describes, such as buzz, bang, sizzle, hiss, splash, cuckoo and woof.
• onondaga noun (Onondaga, the Onondaga); adjective (Onondaga) (a name)
  A Native American people of central New York State, one of the Six Nations of the Haudenosaunee (Iroquois Confederacy); also their language.
• onset noun (the onset, onsets)
  The onset of something is its start, especially of something bad or unpleasant.
• onshore adjective (onshore); adverb (onshore)
  On the land, not at sea, as in "onshore wind farms".
• onside adjective (onside); adverb (onside)
  In football, rugby and hockey, onside means in a position where you are allowed to play the ball; it is the opposite of offside.
• onslaught noun (onslaughts)
  An onslaught is a fierce, sudden attack, when many people or things rush at once.
• ontological adjectiveJewish tradition
  About what exists and how things are, the nature of being.
• onward adverb (onward, onwards); adjective (onward)everyday · Jewish tradition
  Onward means forward, going further on.
• onyx nounJewish tradition
  A stone with bands of color, often black and white, used as a gem.
• ooh interjection (ooh)
  Ooh is a sound people make to show surprise, delight, interest or admiration.
• oolong noun (oolong — uncountable; an oolong, oolongs)
  A kind of Chinese tea, partly oxidised, between green tea and black tea in taste and colour.
• ooze verb (ooze, oozes, oozed, oozing); noun (ooze — uncountable)
  verb (of a thick liquid) To flow out slowly: «Honey oozed from the jar».
• oozing verb form (ooze, oozes, oozed, oozing); adjective (oozing)
  Oozing means slowly flowing or leaking out of something, like thick liquid.
• opal noun (an opal, opals; opal as a material)
  An opal is a precious stone that shows flashing rainbow colours when you move it in the light.
• opaque adjective (opaque, more opaque, most opaque)
  Opaque means light cannot pass through it, so you cannot see through it, like wood or a brick wall.
• open verb (open, opens, opened, opening); adjective (open); noun…everyday · Jewish tradition
  To open is to move something so you can go in or see inside: open a door, open a box.
• opener noun (an opener, openers)
  An opener is a tool for opening something, such as a tin opener, can opener or bottle opener.
• opening noun (an opening, openings); verb form…everyday · Jewish tradition
  An opening is a gap or hole that something can pass through.
• openly adverb
  Openly means in a way that everyone can see or hear, not secretly.
• opera noun (an opera, operas); noun (opera house, opera singer)
  An opera is a play in which the actors sing almost all the words, with an orchestra playing music.
• operate verb (operate, operates, operated, operating)
  To operate a machine is to make it work or control it.
• operatic adjective (operatic; more operatic)
  To do with opera, plays where all or most of the words are sung, with an orchestra.
• operating verb…
  Working or running, said of a machine or business.
• operation noun (operation, operations)everyday · Jewish tradition
  In maths, an operation is a way of working with numbers: add, subtract, multiply or divide.
• operative adjective; noun (an operative, operatives)
  Working, in action: «The new system is now operative.».
• operator noun (an operator, operators)
  A person who works a machine or equipment: «a crane operator».
• opinion noun (an opinion, opinions)everyday · Jewish tradition
  An opinion is what you think or believe about something; it may not be the same as what others think.
• opium noun (opium — uncountable)
  A strong, illegal drug made from the juice of a kind of poppy, which makes people sleepy and is very addictive and dangerous.
• opossum noun (an opossum, opossums); informal: possum
  An opossum is a North and South American marsupial about the size of a cat, with a pointed white face, bare ears and a long, bare tail…
• opponent noun (an opponent, opponents)
  A person or team that you play, compete or fight against.
• opportunity noun (an opportunity, opportunities)
  An opportunity is a time or situation when it is possible to do something you want or need to do; a chance.
• opposable adjective
  Able to be placed opposite and pressed against the other fingers, like a human thumb, so that the hand can grip and pick things up.
• oppose verb (oppose, opposes, opposed, opposing)
  To oppose something is to be against it and try to stop it.
• opposed adjective (opposed); verb past form (oppose → opposed)everyday · Jewish tradition
  If you are opposed to something, you are against it.
• opposing adjective (opposing); verb form…everyday · Jewish tradition
  Being against someone or something in a game, fight or argument (the opposing team).
• opposite noun (opposite, opposites); adjective (opposite)…everyday · Jewish tradition
  The opposite is the thing that is as different as can be: up is the opposite of down.
• opposition noun (opposition — uncountable; the Opposition)everyday · Jewish tradition
  Opposition is strong disagreement with a plan or idea, often shown by speaking or acting against it.
• oppress verb (oppresses, oppressed, oppressing)everyday · Jewish tradition
  To oppress people is to treat them cruelly and unfairly, keeping them under hard control.
• oppressed adjective (oppressed); verb form…everyday · Jewish tradition
  Treated in a cruel and unfair way by people with power, and not given freedom or rights.
• oppression noun (no plural)everyday · Jewish tradition
  Oppression is cruel and unfair treatment of people, keeping them down and taking away their freedom.

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