Where does “bed bath” come from?

bed bath (English) comes from English bed, from Middle English bed, from Old English bedd, from Proto-West Germanic badi, from Persian بدی, from Persian بد, from Middle Persian 𐭯𐭥𐭭, from Proto-Iranian pati- — to fit, to fix, to put together.

bed bath (English): The washing of a person's body in bed

Definitions

  1. The washing of a person's body in bed

Ancestry of “bed bath”, step by step

bed bath traces back through two separate lines of ancestry.

via English bed

StepLanguageWordMeaning
1EnglishbedA piece of furniture, usually flat and soft, on...
2Middle EnglishbedA place of rest or sleep
3Old Englishbeddbed
4Proto-West Germanicbadibed
5Persianبدیbadness
6Persianبدbad; not good; evil; poorly, badly
7Middle Persian𐭯𐭥𐭭to; at; in
8Proto-Iranianpati-against, toward; lord
9Proto-Iranian*rādi-
10Proto-Iranian*rād-
11Proto-Indo-IranianHraHdʰ-
12Proto-Indo-EuropeanHreh₁dʰ-to think; to arrange; to succeed, accomplish
13Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
14Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via English Bath

StepLanguageWordMeaning
1EnglishBathAn English marquisate
2Middle EnglishbaþAlternative form of bath
3Old Englishbæþbath; baptismal font
4Proto-West Germanicbaþbath
5Proto-Germanicbaþąbath
6Proto-Indo-Europeanbʰeh₁-to foment; warm; bathe
Every word from Proto-Indo-European h₂er-Every word from Proto-Indo-European h₂reh₁-Every word from Proto-Indo-European Hreh₁dʰ-