SIR Full Form – What Does SIR Stand For?
The short answer is that the full form of SIR or SIR stands for “Slave I Remain”.
In detail, the full form of SIR or SIR stands for “Slave I Remain”. It is not an acronym. This word is derived from the Middle French honorific title “sire”. It is a respectful form from 14 century. This title is given as a title of honor of a knight.