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English definition of “catch on”

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catch on

verb uk phrasal verb with catch   /kætʃ/ (caught, caught) us  

(BECOME POPULAR)

C1 to become fashionable or popular: I wonder if the game will ever catch on with young people?

(UNDERSTAND)

C2 informal to understand, especially after a long time: He doesn't take hints very easily, but he'll catch on (to what you're saying) eventually.
(Definition of catch on from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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