catch on

/kɛt͡ʃ ˈɑn/ 动词

Chiefly in the form catch oneself on: to cause (oneself) to get or regain a proper appreciation of a situation; to behave in the expected, sensible way; to stop fooling around or being silly. (informal)
Chiefly followed by to: to cling or hold on to something; to get stuck on something; to take hold. (intransitive)
Of food being cooked: to become stuck to the cooking vessel and brown or burn slightly. (dated, intransitive)
Of an idea, a thing, etc.: to become fashionable or popular; also, to become established as standard; to become commonplace. (intransitive) · It’s a crummy idea, and I certainly hope it doesn’t catch on.· At first, many people didn’t like that kind of music, but after a while it caught on.
Followed by to: to recognize the potential of something; also, to take advantage of or use something (especially an idea, a trend, etc.). (intransitive)
Chiefly followed by to: to (begin to) understand; to realize. (informal, intransitive) · He didn’t have to explain; I caught on right away.· She’s been catching on pretty well.

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It took years for the idea to catch on.

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