Where does “underpad” come from?

underpad (English) comes from English pad, from Dutch pad, from Middle Dutch pat, from Old Dutch path, from Proto-West Germanic paþ, from Proto-Germanic paþaz, from Proto-Iranian pántaHh, from Proto-Indo-Iranian pántaHs — to pass; path.

underpad (English): A mattress protector; A padding layer underneath...

Definitions

  1. A mattress protector; A padding layer underneath...

Ancestry of “underpad”, step by step

underpad traces back through two separate lines of ancestry.

via English pad

StepLanguageWordMeaning
1EnglishpadA flattened mass of anything soft, to sit or lie...
2Dutchpadpath; toad; The slot in the frame that accepts...
3Middle Dutchpat
4Old Dutchpath
5Proto-West Germanicpaþpath
6Proto-Germanicpaþazpath
7Proto-IranianpántaHh
8Proto-Indo-IranianpántaHspath
9Proto-Indo-Europeanpent-to pass; path

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European pent-Every word from Proto-Indo-Iranian pántaHsEvery word from Proto-Iranian pántaHh
underpad — Etymology, Origin & Word History | Etymology Explorer