Where does “mouthwash” come from?

Mouthwash is a compound of mouth, from Old English mūþ, and wash, ultimately from Proto-Indo-European wey-.

mouthwash (English): A liquid used to clean one's mouth

Definitions

  1. A liquid used to clean one's mouth

Ancestry of “mouthwash”, step by step

mouthwash traces back through two separate lines of ancestry.

via English wash

StepLanguageWordMeaning
1EnglishwashTo clean with water; To move or erode by the...
2Middle Englishwashen
3Old Englishwasċanto wash
4Proto-West Germanicwaskanto wash
5Proto-Germanicwaskanąto wash
6Proto-Germanicwatskanąto wash, get wet
7Proto-Indo-Europeanwed-water
8Proto-Indo-Europeanwey-to wither; fade; to move, go ahead; to be strong;...

via English mouth

StepLanguageWordMeaning
1EnglishmouthThe opening of a creature through which food is...
2Middle EnglishmouþAlternative form of mouth
3Old Englishmūþmouth, opening, door, gate
4Proto-West Germanic*munþmouth
5Proto-Germanicmunþazmouth
6Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...

Words derived from “mouthwash

Every word from Proto-Indo-European wey-Every word from Proto-Indo-European wed-Every word from Proto-Germanic watskaną