Where does “seignor” come from?

seignor (Middle English) comes from Latin senior, from Latin senex, from Proto-Indo-European sénos — old.

Ancestry of “seignor”, step by step

StepLanguageWordMeaning
1Latinseniorolder, elder; rather old; a lord, sir; an abbot
2Latinsenexold, aged, elderly; old person, old man, old...
3Proto-Indo-Europeansénosold
Every word from Proto-Indo-European sénos →Every word from Latin senex →Every word from Latin senior →