think twice about

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.
See also: think, twice

(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!
See also: something, think, twice
References in classic literature ?
There was no time to think twice about my feat, or, indeed, about anything else that befell upon a night when each moment was more pregnant than the last.
I don't hate the police, we need the police, but I hope this makes them think twice about the way they behave.
Angela Gormlie Rodger added: "I think when people see guns, it makes them think twice about breaking the law.
Maybe staring at young men who've had limbs blown off in Afghanistan might make him think twice about falling to the floor as though he's been hit by a sniper when all that's happened is an arm has brushed the top of his hair-bun.
The research, carried out by Newcastle University, shows drivers with electric cars think twice about whether journeys are really necessary.
Terry Fiske, 57, said: "The side roads are treacherous and the weather makes you think twice about going out and about.
Summary: Cameron Diaz didn't think twice about signing up to play a mum in tear-jerker My Sister's Keeper.
A hard-hitting new poster campaign to make prostitutes' customers think twice about paying for sex with trafficked women was launched today.
Do the Colts think twice about having Vinatieri kicking anything beyond 50 yards, knowing Devin Hester will be waiting under the crossbar to return a short one?
Keep in mind that this is the 3rd edition of this volume, so libraries that own previous editions might want to think twice about purchasing.
For most of us, time is of the essence so we're happy to save passwords, but think twice about autosaving passwords within programs and Web sites that would allow a thief to gain access to sensitive information (like ISPs, online banks, travel sites, pay-per-use information, and music services).
What consumer wouldn't think twice about shopping at a store known to have sold potentially tainted meat?
So don't even think twice about yet another sweet "Anatomy," featuring yet another hysterical idea.
They have earned my confidence and I would not think twice about using their services again.
One exposure could make someone think twice about using it on someone else.