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English definition of “or”

or

conjunction (POSSIBILITIES)    strong /ɔːr/ US  /ɔːr/ weak /ər/ US  /ɚ/
A1 used to connect different possibilities: Is it Tuesday or Wednesday today? You can pay now or when you come back to pick up the paint. Are you listening to me or not? The patent was granted in (either) 1962 or 1963 - I can't quite remember which. It doesn't matter whether you win or lose - it's taking part that's important. There were ten or twelve (= approximately that number of) people in the room. He was only joking - or was he (= but it is possible that he was not)?Either, or, neither, norConnecting words which express a contrast A2 used after a negative verb to mean not one thing and also not another: The child never smiles or laughs. → Compare norEither, or, neither, norConnecting words which express a contrast norGrammar:Or and otherwiseWe often use or and otherwise with conditional meanings:See moreGrammar:OrOr is a conjunction that connects two or more possibilities or alternatives. It connects words, phrases and clauses which are the same grammatical type:See more
(Definition of or conjunction (POSSIBILITIES) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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