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English definition of “catch on”

catch on

(UNDERSTAND) informal phrasal verb with catch     /kætʃ/ verb (caught, caught)
C2 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.Understanding and comprehending
(Definition of catch on (UNDERSTAND) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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