Where does “sweetvetch” come from?

sweetvetch (English) comes from English sweet, from Middle English swete, from Old English swēte, from Proto-West Germanic swōtī, from Proto-Germanic swōtuz, from Proto-Indo-European swéh₂dus, from Proto-Indo-European sweh₂d- — sweet.

sweetvetch (English): Any of the flowering plants of genus "Hedysarum"

Definitions

  1. Any of the flowering plants of genus "Hedysarum"

Ancestry of “sweetvetch”, step by step

sweetvetch traces back through two separate lines of ancestry.

via English sweet

StepLanguageWordMeaning
1EnglishsweetHaving a pleasant taste, especially one relating...
2Middle Englishswetesweet, pleasant-tasting; sweet in smell;...
3Old Englishswētesweet
4Proto-West Germanicswōtīsweet
5Proto-Germanicswōtuzsweet
6Proto-Indo-Europeanswéh₂dussweet
7Proto-Indo-Europeansweh₂d-sweet

via English vetch

StepLanguageWordMeaning
1Englishvetchany of several leguminous plants, of the genus...
2Middle Englishvecche
3Old Northern Frenchveche
Every word from Proto-Indo-European sweh₂d-Every word from Proto-Indo-European swéh₂dusEvery word from Proto-Germanic swōtuz