one-shot adj AmE (complete after) happening only once;
ONE-OFF: He claims it's a one-shot solution to our problem. | Is
this a one-shot deal or do I have to pay again every year?
one-sided adj 1 seeing only one side (of a question); unfair: a one-sided attitude 2 with one side much stronger than the other: The football match was rather one-sided.
—ly adv —ness n [U]
one-star adj [A] of the lowest rank in a system which shows quality by a number of stars: a one-star hotel providing clean, simple accommodation
One ,Thousand 'Guineas, the one of the five English Classic horse races, run at Newmarket RACECOURSE in Suffolk. It is a race for three-year-old female horses.
one-time /'wʌntʌm/ adj [A] former: the onetime President
one-to-one adj, adv 1 matching one another exactly: a one-to-one correspondence between the ranks in two different navies 2 between only two people: one-to-one teaching (=with one teacher and one student)
one-track 'mind n a mind that thinks of only one thing at a time or that is continually concerned with one particular thing, especially sex: All you ever talk about is sex – you've got a one-track mind!
one-'two n 1 (in boxing) a combination of two quick blows with different hands 2 (in football) a combination of two quick passes between two players
one-up-man-ship /wʌn ˈʌpmənʃɪp/ ... also one-ups-man-ship /-ˈʌpsmən-/ AmE — n [U] the art of getting an advantage over others or showing that one is better than them without actually cheating
one-way adj 1 moving or allowing movement in only one direction: one-way traffic | a one-way street 2 especially AmE for SINGLE
one-woman adj [A] operated, worked, or run by one woman: a one-woman show (=with only one woman performing)
on·go·ing /'ɒnˌɡəʊɪŋ/ˈɔːn-, ˈɒn-/ adj continuing, or continuing to develop: an ongoing process | ongoing negotiations → see also GO ON
on·ion /'ʌnʃən/ n 1 [C] a strong-smelling round vegetable made up of one skin within another, used in cooking → see picture at VEGETABLE 2 [C;U] this vegetable as food: fried onions | onion soup → see also know one's onions (KNOW¹)
on·ion·skin /'ʌnjənskɪn/ n, adj AmE of or being very thin light writing paper, used especially for AIRMAIL letters
on-line /'onlaɪnliːc:n-, 'ɑːn-/ adj. adv directly connected to and/or controlled by a computer: an online printer | an online database (=a store of information on a central computer, to which other computers can be connected in order to use the information) → opposite ONLINE
on-look•er /'ɒnˌlʊkərˈlɒn-,- 'ɑːn-/ n. a person who watches something happening without taking part in it: After the accident the police asked the onlookers to move back. → see also LOOK ON
on·ly¹ /'əunli/ adj [A] 1 with no others in the same group or of the same type: John and I were the only people in the room. | the only person in the office who smokes | The only problem is that it's rather expensive. | an only child (=one with no brothers or sisters) 2 the best: She's the only person for this job. | This is the only way to convince him.
only² adv 1 nothing more than; with no one or nothing else added or included: only five minutes more | Ladies only | I saw him only yesterday. (=and no longer ago) | Don't eat it - it will only make you ill. (=that will certainly be the result) | made only from the finest ingredients | Their decision will affect not only our class but the whole school. | Only a doctor can do that. 2 if only (expressing a strong wish): If only he wouldn't eat so noisily. | If he would only learn to eat quietly! 3 only just especially BrE a) a moment before: They've/They had only just (now) arrived. b) almost not: I've only just enough money. 4 only too very; completely: It's only too true.
In writing, put only in front of the part of the sentence which it is about: Only John saw the lion. (=no one else saw it) | John only saw the lion. (=he didn't shoot it) | John saw only the lion (=he didn't see the tiger). In speech, only is not usually put after the verb.
The way the sentence is said makes it clear what is meant. 2 In formal language, only may come at the beginning of a sentence. Notice the word order: Only in Paris can you buy shoes like that.
only $ ^{3} $ conj infml except that; but: She wants to go, only she hasn't got enough money.
Only Fools and 'Horses a very popular British SITCOM (=a television programme that consists of a series of humorous stories about the same group of characters) about two brothers, DEL BOY and Rodney Trotter, who live in a WORKING-CLASS area of London and always try to get money in silly, slightly illegal ways because they do not want to get proper jobs or pay tax
on-message adj, adv (of a politician) saying things that are in agreement with the ideas of his or her political party, especially when it appears that he or she is not thinking enough about these ideas → opposite OFF-MESSAGE
o.n.o. BrE written abbrev for or near(est) offer: 'Man's bicycle for sale, hardly used: £35 o.n.o.'(advertisement)
O·no, Yo·ko /'əunəu, 'jəukəu/ (1933-) a Japanese artist and musician who was married to John Lennon. She made several records with Lennon as part of their group the Plastic Ono Band, including the song Give Peace A Chance.
on-off adj [A]. 1 happening sometimes and not at other times: an on-off relationship 2 an on-off switch is the thing you press to make a piece of electrical equipment start and stop working
on·rush /ˈɒnɪʃiːʃn-ˌɒn-/ n [(of) usually sing] a strong movement forward: There was a sudden onrush of demonstrators, and the police withdrew. ︷ing adj [A] the onrushing tide
on·o·mat·o·poe·ia /,pnəmətə'pi:əl,ɑː-/ n [U] the formation of words that are like natural sounds, for example the word CUCKOO is used to name the bird that makes that sound —ic adj
on-screen adj. adv so as to be actually seen on the SCREEN of a computer: The text is edited on-screen.
on·set /'onset|'on-, 'a:n-/ n [(the)S(of)] the first attack or beginning (of something bad): the onset of a fever
on-shore /,on'fɔːr-ˌʃɪn-ˌʌn-/ adj, adv 1 on(to) or near the shore, not in the water: onshore oil production 2 (coming or moving) towards the shore: The wind was blowing onshore. → opposite OFFSHORE
'on side n [the+S] the ON
on·side /,on'said·‖,3n-,,a:n-/ adj, adv (in certain sports) not OFFSIDE
on-site adj. adv at the place or on the area of land that you are talking about: on-site parking | Food is provided on-site → opposite OFF-SITE
on·slaught /'ɒnslɔːtˈɒːn-, 'ɑːn-/ n [(ɒn)] a fierce attack: Our army tried to withstand the enemy onslaught. | The politician made a violent onslaught (=attacking speech) on the unions.
on·stage /,on'steɪdʒ⁴ ‖,ɔːn-. ,ɑːn-/ adj, adv on the stage in a theatre: Even today I get nervous before I go onstage. → opposite OFFSTAGE
on·stream /'onstri:mll'ɔːn-, 'ɑːn-/ adj, adv [F] (of an industrial process, a piece of equipment etc) in operation or ready to go into operation
On·ta·ri·o /on'teorieullu:n-/ a PROVINCE in the east of central Canada, containing the country's largest city, Toronto, and over a third of its population
Ontario, Lake the smallest of the five GREAT LAKES, between the US and Canada. Its main port is the Canadian city of Toronto.
on the 'job adj, adv while working: on-the-job training | He was fired for sleeping on the job (=while he should have been working)
On the Origin of 'Species (1859) a book written by Charles DARWIN in which he explains his ideas about EVOLUTION
On the 'Road a novel by Jack Kerouac about a journey across the US. Many people believe that the novel is AUTOBIOGRAPHICAL and that the two main characters are really Kerouac and his friend Neal Cassady. On the Road is considered to be the most important book of the Beat Generation. It is known for its unusual style: sentences are often very