фразовый глагол войти в моду; завоевать популярность; привиться Например: I don't think this strange new fashion will catch on. — Не думаю, что эта странная новая мода удержится надолго.
intransitive verb 1. to become aware; learn; also understand Example: didn't catch on to what was going on 2. to become popular Example: this idea has already caught on