Dictionary
Words, grammatical forms and meanings linked to the ontology.
wash out one's mouth en · VERB
Meanings
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(alt-of, alternative) Alternative form of wash one's mouth out.
My 10 year old son mouths off a lot to me lately. Friends have suggested that I wash out his mouth with soap. [...] I will *not* tolerate foul language, though. I recall washing out my son's mouth with soap less than a half dozen times between ages 8 and 11, He absolutely positively hated it, and so did I.
1996 November 29, “mouth soaping questions”, in misc.kids (Usenet):
Forms