Where does “involuntary” come from?

Involuntary comes from Middle English in- (not) combined with voluntary, which derives from Latin voluntārius (willing), itself from Latin in (in) and a root related to Proto-Indo-European gʷelH- (to wish or desire).

involuntary (English): Without intention; unintentional; Not voluntary...

Definitions

  1. Without intention; unintentional; Not voluntary...

Ancestry of “involuntary”, step by step

StepLanguageWordMeaning
1EnglishvoluntaryDone, given, or acting of one's own free will;...
2Middle Englishvoluntarie
3Old Frenchvolontaire
4Latinvoluntāriusvolunteer
5Latinvoluntāswill, free will, choice
6Latinvellepresent active infinitive of volō; wish, intend;...
7Proto-Italicwelōto want, will
8Proto-Indo-Europeanwelh₁-to choose; to want

Words derived from “involuntary

Every word from Proto-Indo-European welh₁-