Where does “ambayssada” come from?

ambayssada (Old Occitan) comes from Old Occitan ambaissa, from Latin ambactia, from Proto-Germanic ambahtiją, from Proto-Germanic ambahtaz, from Gaulish ambaxtos, from Proto-Celtic ambaxtos, from Proto-Indo-European h₂eǵ- — to drive.

Ancestry of “ambayssada”, step by step

StepLanguageWordMeaning
1Old Occitanambaissaservice, mission, errand; message
2Latinambactia—
3Proto-Germanicambahtijąservice, ministry, office, message
4Proto-Germanicambahtazservant
5Gaulishambaxtosvassal, high-ranking servant
6Proto-Celticambaxtosservant
7Proto-Indo-Europeanh₂eǵ-to drive
Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Celtic ambaxtos →Every word from Gaulish ambaxtos →