English words: Oneida to onomatopoetic

300 English words, part 25 of 67 of the words starting with O, A to Z. 30 have a page of their own.

English words Oneida to onomatopoetic

Oneida noun /oʊˈnaɪdə/: A member of a tribe of Native Americans formerly inhabiting the region near Oneida Lake in New York, now often found in modern New York, Wisconsin, or Canada.
oneillite noun: A trigonal-pyramidal yellowish brown mineral containing calcium, chlorine, hydrogen, iron, manganese, niobium, oxygen, silicon, sodium, and zirconium.
oneir- prefix: Alternative form of oneiro-.
oneiric adjective /oʊˈnaɪ.ɹɪk/: Of or pertaining to dreams.
oneirically adverb: In an oneiric fashion.
oneirism noun /ə(ʊ)ˈnʌɪɹɪzəm/: Dream-like experiences or qualities; dreaminess.
oneiro- prefix: dream
oneirocrisy noun: Prognostication based on the interpretation of dreams.
oneirocrit noun: Synonym of oneirocritic (“an interpreter of dreams”).
oneirocrite noun: One skilled in oneirocrisy; an interpreter of dreams.
oneirocritic adjective, noun /əʊˌnaɪə.ɹəˈkɹɪt.ɪk/: An interpreter of dreams.
oneirocritical adjective: Of or relating to the interpretation of dreams.
oneirocritically adverb: In terms of dream interpretation.
oneirocriticism noun: dream interpretation
oneirocritics noun: The art of interpreting dreams; oneirocriticism.
oneirocritique noun: Critique or interpretation of dreams.
oneirodid noun: Any fish of the family Oneirodidae.
oneirodynia noun: A violent or disturbed imagination during sleep, as in the case of nightmares and sleepwalking.
oneirogen noun: Any drug, herb, etc. that produces or enhances a dream-like state of consciousness.
oneirography noun: Writing based on the content of dreams.
oneiroid adjective /ə(ʊ)ˈnʌɪɹɔɪd/: Characterized by a dream-like or nightmare-like state, often as part of schizophrenia.
oneirological adjective: Relating to oneirology.
oneirologist noun: An interpreter of dreams.
oneirology noun: The study of dreams and their interpretation.
oneiromancer noun: One who practises oneiromancy.
oneiromancy noun /əˈnaɪɹəˌmænsi/: Divination by the interpretation of dreams.
oneiromantic adjective: Of or relating to oneiromancy.
oneironaut noun /əʊˈnaɪɹənɔːt/: A person who explores dream worlds, usually associated with lucid dreaming.
oneironautics noun /əʊˌnaɪ.ɹəˈnɔːt.ɪks/: Lucid dreaming, the ability to explore dreams.
oneirophobia noun: The fear of dreams.
oneirophrenia noun: A hallucinatory, dream-like state caused by sleep deprivation, drugs, etc.
oneirophrenic adjective: Relating to oneirophrenia.
oneiroscopic adjective: Relating to the interpretation of dreams.
oneiroscopist noun: Someone who interprets dreams.
oneiroscopy noun: dream interpretation
oneirosis noun: A form of light hypnosis.
oneirotherapy noun: Any of various forms of psychotherapy relying on visual imagery and symbolism.
oneirotic adjective: Of or relating to oneirosis.
oneish noun /ˈwʌnɪʃ/: Any time close to one o'clock.
oneism noun: A policy of oneness or unity.
oneitis noun /wʌnˈaɪtɪs/: Attraction towards a single potential partner to the exclusion of other possible partners.
onek noun /wʌnk/: A One-pronged fork.
oneliner noun: Alternative form of one-liner.
oneliness noun: The state of being one or single.
oneling noun: A singleton; maverick; a single or only child.
onement noun /ˈwʌnmənt/: The state of being at one or reconciled.
oneness noun: The state of being one or undivided; unity.
Oneonta proper noun: A city, the county seat of Blount County, Alabama.
Oneota proper noun: A cultural complex that existed in the eastern plains and Great Lakes area of what is now occupied by the United States from around AD 900 to around 1650 or...
oner noun /ˈwʌnəɹ/: An extraordinary individual or thing.
onerary adjective: Fitted for, or carrying, a burden.
onerate verb /ˈɒnəɹeɪt/: To load; to burden or bedeck.
oneration noun: The act of loading or burdening.
onerosity noun: Onerousness.
onerous adjective /ˈɒnəɹəs/: Imposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.
onerously adverb: In an onerous manner.
onerousness noun: The state or characteristic of being onerous.
onery adjective: Pronunciation spelling of ornery.
ones noun, pronoun, verb /wʌnz/: A senior or first team (as opposed to a reserves team).
ones and twos noun: Turntables used by DJs.
ones and zeroes noun /ˈwʌnz n̩ ˈzɪəɹəʊz/: Binary code; on and off bits.
ones and zeros noun: Alternative spelling of ones and zeroes.
ones' complement noun: The number obtained by subtracting a given n-digit binary number from 2ⁿ-1 (which yields the same result as the logical complement).
onescore number: Twenty (20).
oneseed juniper noun: A shrub or small tree native to mountains in southwestern North America, Juniperus monosperma
oneself pronoun /wʌnˈsɛlf/: A person's self: general form of himself, herself, themselves or yourself.
oneselves pronoun: The reflexive case of the pronoun ones; a group of people in general.
onesey-twosey adjective: Involving very small quantities
oneship noun: Unity; oneness.
oneshot adjective, noun, verb: To kill or destroy with a single hit; to instakill.
onesided adjective: Alternative spelling of one-sided.
onesidedness noun: Alternative form of one-sidedness.
onesie noun /ˈwʌn.zi/: A one-piece garment for an infant or small child, generally worn over a diaper.
onesie-twosie adverb: Individually or in very small groups, rather than in larger batches.
onesied adjective: Wearing a onesie.
onesies noun: A call in any children's game, such as jacks, where one action must be performed.
onesome noun /ˈwʌnsəm/: A solitary person or thing; a "group" of one.
onespot fringehead noun: Neoclinus uninotatus, a species of fringehead blenny.
'onest adjective: Pronunciation spelling of honest.
'onesty noun: Pronunciation spelling of honesty.
oneteen number: eleven
oneth adjective, noun /ˈwʌnθ/: 'first', or other ordinal derivatives of 'one', such as hundred-and-oneth or minus-oneth
oneties noun: The second decade of a century: the 1910s, the 2010s, etc. The tens.
onetime adjective: Alternative form of one-time (“former; past”).
onety-one number: eleven
onety-oneth noun: eleventh
oneupmanship noun: Alternative spelling of one-upmanship.
oneway adjective: Alternative form of one-way.
'oney noun: Pronunciation spelling of honey.
onfall noun, verb: A falling on or upon; an attack, onset, or assault.
onfield adjective: That takes place on a sports field
onflow noun: A flowing onward.
onflowing adjective: flowing onward
onforward verb: To forward (resend).
ong adjective, adverb, noun: Uncommon spelling of dong (“Vietnamese currency”).
onga-onga noun: Alternative form of ongaonga.
Ongan adjective: Of or relating to a linguistic phylum comprising two attested Southern-Andamanese languages spoken in the southern Andaman Islands.
ongang noun: A start-up; beginning; commencement (of activity, work, machinery, etc.); a setting in motion.
ongaonga noun: The plant Urtica ferox, a nettle endemic to New Zealand with woody stem and large stinging spines.
Ongar proper noun: A civil parish and post town with a town council in Epping Forest district, Essex, England, the parish includes Chipping Ongar.
Onge noun: One of the Andamanese indigenous peoples of the Andaman Islands.
Ongee noun: Alternative form of Onge.
ongezellig adjective: Having an unwelcoming, uninviting, or unsociable atmosphere
Ongian adjective: Of or relating to Walter J. Ong (1912–2003), American Jesuit priest, professor of English literature, cultural and religious historian and philosopher, who...
onglaze adjective: Done on a glazed surface
onglet noun: A hanger steak.
onglide noun, verb: A phase while the articulators are moving into position to produce a new speech sound.
ongo verb: To be ongoing (occurring, happening); to last, proceed or continue.
ongoer noun: One who continues moving along a path or carrying on a tradition.
ongoing adjective, noun, verb /ɒnˈɡəʊ.ɪŋ/: Continuing, permanent, lasting.
ongoing covid noun: Synonym of long Covid.
ongoingly adverb: In an ongoing fashion.
ongoingness noun: The condition of being ongoing; continuation; continuity.
Ongole noun: A cow or bull of a strong, aggressive breed originating from Ongole.
onhanger noun: That which, or one who, hangs on to, relies on, or is dependent upon another; a dependent.
onhold verb: To hold on (to).
onholding adjective: Continuous; perpetual; lasting.
oni noun /ˈəʊni/: A Japanese evil spirit or demon.
æonial adjective: Alternative form of eonial.
æonian adjective: Dated spelling of aeonian.
onibi noun: The will o' the wisp.
-onic adjective, suffix: Dated spelling of aeonic.
onicolo noun: A variety of onyx for cameos, a bluish-white band on the dark ground.
Onida proper noun: A small city, the county seat of Sully County, South Dakota, United States.
-onidine suffix /ˈɒn.ɪ.diːn/: Used to form names of clonidine derivatives used as antihypertensives.
onigirazu noun: A form of sushi having the filling sandwiched between portions of rice instead of formed into a circle.
onigiri noun /ˌoʊ.nɪˈɡɪɹ.i/: A Japanese food made by putting ingredients into white rice, wrapping the outside with laver, and shaping it into a triangle.
onii-chan noun: Older brother
Onika proper noun: A female given name.
onikulactone noun: A cat attractant found in Boschniakia rossica.
oniochalasia noun /ˌəʊnɪ.əʊkəˈleɪzɪ.ə/: The act of purchasing objects as a form of mental relaxation.
oniomania noun /ˌəʊnɪ.əʊˈmeɪnɪ.ə/: An abnormal impulse to buy things, or a condition characterised by such impulses.
oniomaniac noun /ˌəʊnɪ.əʊˈmeɪnɪ.ak/: A sufferer from oniomania.
onion noun /ˈʌnjən/: A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice.
onion bag noun: The goal net.
onion booty noun: Large, attractive female buttocks.
onion bottle noun: Synonym of glass onion.
onion bread noun: A type of bread containing finely minced onions.
onion couch noun: The flowering plant Arrhenatherum elatius.
onion dome noun: An onion-shaped dome, characteristic of august buildings in Moghul and Russian architecture
onion fish noun: Any member of the family Macrouridae of fish called grenadiers.
onion flute noun: Synonym of eunuch flute.
onion fly noun: Delia antiqua, a cosmopolitan pest of crops, whose larvae or maggots feed on onions, garlic and other bulbous plants.
onion grass noun: Species of Melica, especially Melica bulbosa and Melica subulata.
onion Johnny noun: A Breton farmer and agricultural labourer on a bicycle who sells distinctive pink onions door to door in Great Britain.
onion maggot noun: Synonym of onion fly.
onion network noun: A network that uses onion routing.
onion paper noun: Synonym of onionskin (“thin translucent paper”).
onion peel noun: Synonym of onion skin
onion red noun: A deep muted reddish-purple shade, often with a burgundy or maroon undertone.
onion ring noun: A ring-shaped piece of onion formed from a way of cutting through the natural shell structure of the onion.
onion roll noun: A yeast-raised roll that is flavored with onion and is often topped with dried onions or poppy seeds.
onion router noun: A network node involved in onion routing.
onion routing noun: A technique for anonymous communication over a computer network, the messages being repeatedly encrypted and sent through nodes called onion routers, each...
onion seed noun: The strong-flavored seed of black caraway or nigella (Nigella sativa), which is deep black with flat sides, like those of the onion.
onion service noun: A server configured to receive inbound connections only through the anonymity network Tor.
onion skin noun: The outer layer of an onion.
onion-skinned adjective: overly sensitive
onion skinning noun: A technique in animation in which consecutive frames are layered translucently to aid the animator.
onion smudge noun: A disease of the onion caused by the fungus Colletotrichum circinans which causes black concentric rings or smutty spots on the outer scales of the bulb, or...
onion smut noun: A disease of the seedlings of the onion caused by the fungus Urocystis cepulae which causes black elongate blisters on the bulb and leaves of the plant.
onion snow noun: An early spring snow.
onion squash noun: Synonym of red kuri squash.
onion straw noun: A thin strip of onion deep-fried in batter.
onion thrips noun: An insect of species Thrips tabaci, a pest on onions.
onion volcano noun: A hibachi-style cooking trick where a large onion is stacked into a cone shape on a hot griddle, a small amount of oil is added, and then an 80-proof liquor...
onion-y adjective: Alternative form of oniony.
onioned adjective: Flavoured or made with onion.
onionet noun: A small onion.
oniongrass noun: Alternative form of onion grass.
onionin A noun: A sulfur-containing compound isolated from onions, having anticancer properties.
onioniness noun: The state or condition of being oniony.
onionized adjective: Flavoured with, or converted into, onion; made oniony.
onionless adjective: Without onions.
onionlike adjective: Resembling or characteristic of an onion, for example in shape, flavour, or layered structure.
onionseed noun: Alternative form of onion seed
onionskin noun: A thin, strong, light, translucent paper; used especially for making carbon copies.
oniontini noun: A martini cocktail garnished with cocktail onions.
onionweed noun: Asphodelus fistulosus, an annual or short-lived perennial herb with a hollow stem and a large tuft of onion-like rounded hollow leaves.
onionwood noun: Syzygium aliilignum
oniony adjective /ˈʌnjəni/: Resembling an onion or onions, especially in terms of smell.
oniric adjective /əʊˈnɪ.ɹɪk/: Alternative form of oneiric.
onirocritic adjective, noun /əʊˌnɪə.ɹəˈkɹɪt.ɪk/: Alternative form of oneirocritic.
oniscid noun: Any of the Oniscidae; a woodlouse.
oniscidean noun: Any of the terrestrial isopod crustaceans of suborder Oniscidea; a woodlouse.
onisciform adjective: flattened and broad in form
oniscoid noun: A member of the Oniscoidea; a woodlouse.
oniscophagous adjective: Feeding on woodlice.
oniscophagy noun: The practice of feeding on woodlice.
Onishi proper noun: A surname from Japanese.
Onitsha proper noun: A city in Anambra State, Nigeria, located on the eastern bank of the Niger river.
onium noun, suffix /ˈoʊniəm/: Any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families.
ONJ noun: Abbreviation of osteonecrosis of the jaw.
onjisaponin noun: Any of a group of saponins, from the root of Polygala tenuifolia, used in Chinese medicine
onkilonite noun: A nepheline basalt mineral.
Onko noun: A Yoruba people inhabiting the areas drained by the upper Ogun river in Northwestern Oyo state in Nigeria.
onkos noun: A kind of headdress in Ancient Greek theatre.
onkus adjective: Inferior; unpleasant; unacceptably bad.
onland adjective: On the land, as opposed to the ocean.
onlap noun, verb: The phenomenon of successively younger rock strata extending progressively further across an erosion surface cut in older rocks.
onlay noun, verb: To lay or place something on a surface.
onlead verb: To lead on or forward.
onlend verb: To loan out something that has been borrowed.
onlest adjective: Only.
Onley proper noun: A deserted medieval village in Barby parish, Northamptonshire, England.
onlier noun: Something that lies very close to the expected position.
online adjective, adverb, verb /ˈɒnlaɪn/: Of a generator or power plant: connected to the grid.
online banking noun: Synonym of e-banking.
online date noun, verb: A date over the Internet.
online dating noun, verb: Dating over the Internet, typically using a website or app to find potential connections.
online learning noun: The training of a neural network using stochastic gradient descent with a mini-batch size of one; only one input is used for training at a time.
online public access catalog noun: A computerized online publicly accessible catalog of the materials held in a library, or library system.
online reality game noun: An online game, typically based around a reality show, that stars a cast of real people competing in a game show-esque environment.
online service provider noun: Any company, organization, or group that provides services over the Internet, including web hosting, Internet access, social media platforms, and cloud storage.
online wallet noun: Synonym of e-wallet.
onlineness noun: The state or quality of being online.
onliner noun: A person who is online; a user of the Internet or similar service.
onliness noun: The state of being alone or unique.
onload noun, verb: To load onto or upon.
onloan noun, verb: Alternative form of on-loan.
onlook noun, verb: The act of looking on (something); observation.
onlooker noun /ˈɒnˌlʊkə/: One who looks on or watches, without becoming involved or participating; an observer, a spectator.
onlooking adjective /ˈɒnlʊkɪŋ/: That is looking on; watching, observing.
only adjective, adverb, conjunction, noun, particle /ˈoʊn.li/: Alone in a category.
only a mother could love phrase: Used to describe someone or something very unlovable or repulsive.
only-begotten adjective: Being the only child of one’s parent (especially one’s father)
only child noun: A person who has no siblings; a person raised as the sole child in a household.
only daughter noun: A sole female child, whether one among multiple siblings, or one who has no siblings.
only dead fish go with the flow proverb: Conforming to the influences of others does not allow a person to follow their own goals and desires.
only fools and horses work proverb: A philosophy of life, holding that people who do not look for (and find) an easy way of earning a living are foolish.
only game in town noun: The only opportunity, activity, or resource available.
only if conjunction: Not unless; used to introduce a necessary condition.
only in Ohio interjection: Said in response to witnessing something violent, cringe-inducing, or absurd.
only just adverb: recently; just now
only move noun: The only move to maintain the current evaluation of the position.
only Nixon can go to China proverb: Alternative form of only Nixon could go to China.
only Nixon could go to China proverb: Only a politician or leader with an impeccable reputation of upholding particular political values could perform an action in seeming defiance of them...
only son noun: A sole male child, whether one among multiple siblings, or one who has no siblings.
only the good die young proverb: Alternative form of the good die young.
only time will tell phrase: Alternative form of time will tell.
only too adverb: very, all too.
only trotting after preposition: far behind, below, inferior to; possessing a quality to a far lesser extent than
onlyborn adjective, noun: Born as the only child in a family, flock, or the like.
onlyer noun /ˈəʊnliə(ɹ)/: Someone who only adheres to the particular thing mentioned, excluding any alternatives.
OnlyFans noun: An account on OnlyFans, an online subscription service best known for hosting amateur pornography.
onlyhood noun: the condition of being unique, single, or alone
ONM noun: Acronym of outer nuclear membrane.
onmun noun: The Korean script; hangul.
Onn proper noun: A surname.
onna contraction: On the.
onnagata noun /ˌɒnəˈɡɑːtə/: A male actor who plays female roles in Japanese kabuki theatre.
ono adjective, noun, phrase: Abbreviation of or near(est) offer.
onocentaur noun /ɒnəˈsɛntɔː/: A centaur with the body of an ass, instead of a prototypical horse.
onoceradiene noun: Any of a group of triterpene hydrocarbons, such as...
onocerin noun: A white crystalline waxy triterpene extracted from the root of the leguminous plant spiny restharrow (Ononis spinosa).
onocleaceous adjective: Of or relating to the Onocleaceae.
Onoda proper noun: A surname from Japanese.
Onodi noun: A back handspring with a half turn in mid air, finished with a front walkover.
onolatry noun: Worship of the ass or donkey.
onomancy noun: divination by the letters of a name; nomancy
onomantic adjective: Of or relating to onomancy.
onomantical adjective: Alternative form of onomantic
onomasiologic adjective: Alternative form of onomasiological.
onomasiological adjective: Of or pertaining to onomasiology.
onomasiologically adverb: In an onomasiological manner or context.
onomasiologist noun: A practitioner of onomasiology
onomasiology noun: A branch of lexicology concerned with the names of concepts.
onomast noun: A person who studies onomastics; a person who studies (proper) names.
onomastic adjective /ˌɒ.nəʊˈmæs.tɪk/: Of or relating to a personal or place name.
onomastically adverb: In an onomastic way.
onomastician noun: A person who studies onomastics; one who studies or researches names.
onomasticide noun: The deliberate changing of foreign surnames into local equivalents
onomasticon noun /ˌɒ.nəʊˈmæs.tɪ.kən/: A book, list, or vocabulary of names, especially of people.
onomastics noun /ˌɒ.nəʊˈmæs.tɪks/: The branch of lexicology devoted to the study of names and naming, especially the origins of names.
onomatechny noun: prognostication by the letters of a name; onomancy
onomato- prefix: name
onomatodox adjective: Relating to, supporting or advocating onomatodoxy.
onomatodoxy noun /ˌɒnəˈmætəˌdɒksi/: The doctrine that the name of God is God himself.
onomatoid noun: In the philosophy of reism, any name denoting a state, relation, property, etc. rather than a body.
onomatological adjective: Relating to onomatology, the study of the origins of names.
onomatologically adverb: In terms of or by means of onomatology.
onomatologist noun: onomastician
onomatology noun /ˌɒnəməˈtɒləd͡ʒi/: Synonym of onomastics
onomatomancy noun: Synonym of onomancy.
onomatomania noun: An abnormal obsession with a particular word.
onomatomantic adjective: Of or pertaining to onomatomancy.
onomatope noun /ˈɒnəmətəʊp/: A word formed by onomatopoeia or mimesis.
onomatophobia noun: The fear of hearing particular names or words.
onomatophore noun: A specimen that serves to bear a taxonomic name, as a type.
onomatopoeia noun /ˌɒnəˌmætəˈpiːə/: The property of a word that sounds like what it represents.
onomatopoeial adjective: Of or pertaining to onomatopoeia.
onomatopoeian adjective, noun: A word formed by onomatopoeia.
onomatopoeic adjective /ˌɒnəmætəˈpiːɪk/: Of or relating to onomatopoeia.
onomatopoeical adjective: Alternative form of onomatopoeic.
onomatopoeically adverb: In an onomatopoeic manner.
onomatopoeics noun: The use of onomatopoeia.
onomatopoeious adjective: Of or pertaining to onomatopoeia.
onomatopoesis noun: onomatopoeia
onomatopoesy noun: The use of onomatopoeia.
onomatopoetic adjective: Synonym of onomatopoeic.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under O: 20,049 words, in 67 parts.