An elderly person, especially one over the age of 60.
Concerning rules or principles as opposed to acts.
A respectful term of address to an adult male (often older), especially if his name or proper title is unknown.
A man of a higher rank or position.
to a teacher.
to a knight or other low member of the peerage.
to a superior military officer.
A respectful term of address to a man of higher rank or position
To address (someone) using "sir".