catch on

English Thesaurus

1. become popular (verb.change)

hypernym	:	change,
definition	:	undergo a change; become different in essence; losing one's or its original nature (verb.change)

2. understand, usually after some initial difficulty (verb.cognition)

hypernym	:	apprehend, compass, comprehend, dig, get the picture, grasp, grok, savvy,
definition	:	get the meaning of something (verb.cognition)