Etymology

bathroom

B3A1T1H4R1O1O1M3

Today it means: A room containing a shower or bathtub, and (typically but not necessarily) a toilet. Full definition →

English room ← Middle English roum ← Old English rūm
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The story

  1. Proto-Indo-European*bʰeh₁-
  2. Proto-Germanic*baþą
  3. Proto-West Germanic*baþ
  4. Old Englishbæþ
  5. Middle Englishbath
  6. Englishbath
  7. Proto-Indo-European*Hrew-?
  8. Proto-Indo-European*(H)rewH-
  9. Proto-Germanic*rūmą
  10. Proto-West Germanic*rūm
  11. Old Englishrūm
  12. Middle Englishroum
  13. Englishroom
  14. English todaybathroom

From bath + room. Compare Dutch badkamer (“bathroom”), German Badezimmer (“bathroom”), Swedish badrum (“bathroom”), Faroese baðrúm (“bathroom”).

Etymology from Wiktionary, CC BY-SA 4.0.