think twice about something/about doing something
To reconsider, be cautious about, or thoroughly contemplate something before committing to it. I'm going to sue them for everything they're worth—maybe then they'll think twice about trying to steal my ideas! Maybe we should think twice about investing so much money in a project we know so little about.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
think twice about someone or something
to give careful consideration to someone or something. Ed may be a good choice, but I suggest that you think twice about him. You will want to think twice about it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
(not) think ˈtwice about something/about doing something(not) think carefully before deciding to do something; (not) hesitate: You should think twice about employing someone you’ve never met. ♢ If they offered me a job abroad, I wouldn’t think twice about taking it!
Farlex Partner Idioms Dictionary © Farlex 2017