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English definition of “happen”

happen

verb [I] (CHANCE)    /ˈhæp.ən/
C1 to do or be by chance : [+ to infinitive] They happened to look (= looked by chance ) in the right place almost immediately . [+ (that)] Fortunately it happened (that) there was no one in the house at the time of the explosion . [+ that] It just so happens that I have her phone number right here. She happens to like cleaning (= she likes cleaning , although that is surprising ). I happen to think he's right (= I do think so, although you do not). As it happened (= although it was not planned ), I had a few minutes to spare .Chance and randomness Grammar:HappenHappen means ‘occur’ and most commonly ‘occur by chance’:
(Definition of happen verb (CHANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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