Where does “Sir” come from?

Sir comes from Middle English sire, from Old French sire, from Latin senior, the comparative form of senex meaning old or elder.

Sir (English): Alternative letter-case form of sir; The titular...

Definitions

  1. Alternative letter-case form of sir; The titular...

Ancestry of “Sir”, step by step

Sir traces back through two separate lines of ancestry.

via English sire

StepLanguageWordMeaning
1EnglishsireA lord, master, or other person in authority,...
2Middle EnglishsireUsed preceding the name or title of a knight,...
3Old Frenchsirenominative singular of sieur; master, sir, lord;...
4Vulgar Latinseior
5Latinseniorolder, elder; rather old; a lord, sir; an abbot
6Latinsenexold, aged, elderly; old person, old man, old...
7Proto-Indo-Europeansénosold

via Middle English sir

StepLanguageWordMeaning
1Middle EnglishsirAlternative form of sire

Words derived from “Sir

Every word from Proto-Indo-European sénos
Sir — Etymology, Origin & Word History | Etymology Explorer