Where does “adieu” come from?

adieu (Polish) comes from French adieu, from Old French a Dieu vos comant.

Ancestry of “adieu”, step by step

StepLanguageWordMeaning
1Frenchadieufarewell, adieu; goodbye, see you soon; hello
2Old Frencha Dieu vos comant
Every word from Old French a Dieu vos comantEvery word from French adieu