Where does “underlinen” come from?

underlinen (English) comes from English linen, from Middle English lynnen, from Old English līnen, from Proto-Germanic līnīnaz, from Proto-Germanic līną, from Proto-Indo-European līno- — flax.

underlinen (English): Underwear (especially, but not always, made of linen); any undergarment

Definitions

  1. Underwear (especially, but not always, made of linen); any undergarment

Ancestry of “underlinen”, step by step

underlinen traces back through two separate lines of ancestry.

via English linen

StepLanguageWordMeaning
1EnglishlinenThread or cloth made from flax fiber; Domestic...
2Middle EnglishlynnenMade of flax fibers; linen
3Old Englishlīnenlinen", "made of flax
4Proto-Germaniclīnīnazlinen, made of flax
5Proto-Germaniclīnąflax
6Proto-Indo-Europeanlīno-flax

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 līno- →Every word from Proto-Germanic līną →Every word from Proto-Germanic līnīnaz →