keep a civil tongue in your head

keep a civil tongue in (one's) head

To speak kindly and politely. Please try to keep a civil tongue in your head the next time you talk to Mary, instead of arguing with her, OK?
See also: civil, head, keep, tongue
Farlex Dictionary of Idioms.

keep a civil tongue in your head

speak politely and calmly, without rudeness.
See also: civil, head, keep, tongue
Farlex Partner Idioms Dictionary
See also:
  • keep a civil tongue in (one's) head
  • keep a civil tongue in one's head
  • keep a civil tongue
  • Would you please?
  • if you don't mind
  • If you don't mind!
  • on the tip of (one's) tongue
  • on the tip of one's tongue
  • give tongue
  • hold one's tongue, to