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, huh?
See also: civil, head, keep, tongue

keep a civil tongue in your head

speak politely and calmly, without rudeness.
See also: civil, head, keep, tongue
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