take up with (one)

take up with (one)

To form a close relationship with or begin to associate or keep company with one. Often used in reference to an unsavory or untrustworthy person or group of people. He was a great student until he took up with a group of troublemakers and ended up getting expelled. Sarah has taken up with a much older man, and it makes me really uncomfortable.
See also: take, up
Farlex Dictionary of Idioms.

take up with someone

to become close with someone; to become friends with someone. I think that Albert may have taken up with the wrong people. I did not want Lefty to take up with Max, but he did, and look where it's gotten him.
See also: take, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

take up with

Begin to associate with, consort with, as in She took up with a fast crowd. [Early 1600s]
See also: take, up
The American Heritage® Dictionary of Idioms by Christine Ammer.

take up with

Informal
To begin to associate with; consort with: took up with a fast crowd.
See also: take, up
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • polecat
  • associate
  • associate oneself with
  • associate with
  • keep bad company
  • get into bad company
  • get into/keep bad company
  • pill
  • the pill
  • slippery customer