Where does “underfrock” come from?

underfrock (English) comes from English frock, from Middle English frok, from Old French froc, from Frankish hrokk, from Proto-Germanic hrukkaz, from Proto-Indo-European rug(')- — upper clothes, shirt.

underfrock (English): An underslip worn beneath a dress

Definitions

  1. An underslip worn beneath a dress

Ancestry of “underfrock”, step by step

underfrock traces back through two separate lines of ancestry.

via English frock

StepLanguageWordMeaning
1EnglishfrockA dress, a piece of clothing for a female, which...
2Middle Englishfrok—
3Old Frenchfrocfrock
4Frankishhrokkrobe, tunic
5Proto-GermanichrukkazAlternative form of *rukkaz; robe, jacket, skirt,...
6Proto-Indo-Europeanrug(')-upper clothes, shirt

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 rug(')- →Every word from Proto-Germanic hrukkaz →Every word from Frankish hrokk →