Etymology

mouthwash

M3O1U1T1H4W4A1S1H4

Today it means: A liquid used to clean one's mouth. Full definition →

English wash ← Middle English waschen ← Old English wascan
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The story

  1. Proto-Indo-European*men-
  2. Proto-Indo-European*mn̥-tó-s
  3. Proto-Germanic*munþaz
  4. Proto-West Germanic*munþ
  5. Old Englishmūþ
  6. Middle Englishmouth
  7. Englishmouth
  8. Proto-Indo-European*wed-
  9. Proto-Indo-European*wodsḱéti
  10. Proto-Germanic*waskaną
  11. Proto-West Germanic*waskan
  12. Old Englishwascan
  13. Middle Englishwaschen
  14. Englishwash
  15. English todaymouthwash

From mouth + wash.

Etymology from Wiktionary, CC BY-SA 4.0.