catch-on

Verbs

(v) understand, usually after some initial difficulty
- She didn't know what her classmates were plotting but finally caught on
cotton on, get it, get onto, get wise, twig, latch on, tumble,
(v) become popular
- This fashion caught on in Paris

Synonyms

cotton on get it get onto get wise twig latch on tumble

Words of close approximity

catch it catch up

catch one's breath