wash one's mouth out

present singular third person washes one's mouth out · participle present washing one's mouth out · participle past washed one's mouth out · past washed one's mouth out · alternative wash out one's mouth

1. figurativelyimperativeusuallyTo stop using bad language, or atone for doing so.

   Wash out your mouth, your lies are gettin' rusty

   1970, “Funkier Than a Mosquito's Tweeter”, in Alline Bullock (lyrics), Workin’ Together, performed by Ike & Tina Turner

   4 more examples

   Some Tory MPs think the Queen needs to wash her mouth out.

   1999 November 19, “A pother of pedants”, in The Guardian

   But anybody who says Cameron was hedging his bets better had wash their mouth out; this was nothing more than the kind of away day where only the top names rock up.

   2011 March 23, “James Cameron Shines like a star”, in The Guardian, retrieved 12 Nov 2021

   “What’s all this madness I’m hearing about there being no promotion or relegation from the PL?” he tweeted. “Wash your mouth out whoever suggested that.”

   2011 October 19, Ben Smith, “Wigan ‘will quit’ if Premier League becomes closed shop”, in The Times

   All these references to named individuals are quite improper. […] He should wash his mouth out, and should refer to Ministers not by name but by title, which he is well able to do.

   2019 October 8, John Bercow, “Preparations for Leaving the EU”, in parliamentary debates, volume 664, column 1674

2. Used other than figuratively or idiomatically: see wash out, mouth.

   The foreigners content themselves with washing their hands. The Moors wash their mouths out with soap also, blowing bubbles and gargling happily.

   1956, Encounter, volume 6, page 30