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Verb: catch on
Usage: informal
  1. Understand or realize, usually after some time or initial difficulty
    "She didn't know what her classmates were plotting but finally caught on";
    - get wise [informal], get onto, tumble [informal], latch on [informal], cotton on [informal], twig [Brit, informal], get it, cop on [Brit, informal]
     
  2. Become popular
    "This fashion caught on in Paris"

Derived forms: catching on, catches on, caught on

Type of: apprehend, change, compass, comprehend, dig [informal], get the picture, grasp, grok [N. Amer, informal], savvy

Nearest

catbrier
catcall
catch
catch 22
catch a glimpse
catch a wink
catch cold
catch crop
catch fire
catch it
catch on
catch one's breath
catch out
catch pen
catch phrase
catch sight
catch some Z's
catch up
catch up with
catch-22
catchall