Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sir

2 senses of sir

Sense 1
sir -- (term of address for a man)
       => man, adult male -- (an adult person who is male (as opposed to a woman); "there were two women and six men on the bus")

Sense 2
Sir -- (a title used before the name of knight or baronet)
       => male aristocrat -- (a man who is an aristocrat)