the word 'vermouth' entered english in the early 19th century from french, which borrowed it from the german term 'wermut', meaning 'wormwood'. the german word itself traces back to old high german 'wermuota', a compound whose first element is related to latin 'vermis' (worm), likely due to the plant's historical use in treating intestinal worms. the name of the alcoholic beverage derives directly from its primary historical botanical flavoring, wormwood (artemisia absinthium). thus, the modern drink name preserves, through a chain of linguistic borrowing, an ancient reference to its defining ingredient.

this is a loanword adopted as a single unit into english. it does not contain separable morphemes within its modern english spelling.