think twice (about (something))

to consider something more carefully.

You may want to think twice before buying one of California's new earthquake insurance policies.

Usage notes: often used as a warning, and sometimes used in the form think twice before doing something:

He said he is sorry and will think twice before giving such advice again.

• put someone's mind at rest
• put someone's nose out of joint
• put someone through
• put someone through hell
• put someone through hoops
• put someone through paces
• put someone through something
• put someone through their paces
• put someone through the mill
• put someone through the wringer
• put someone to death
• put someone to shame
• put someone to sleep
• put someone to the test
• put something back on the rails
• put something back on track
• put something behind
• put something behind someone
• put something behind something
• put something behind you
• put something down to experience
• put something in a hole
• put something in motion
• put something in the shade
• put something into service