Respectful titles such as 'sirs' are terms of address used to show respect and deference to a person or group of people. The term 'sirs' is an abbreviation for the word 'sirs' which is a respectful title used to address a group of men, typically in a formal setting. It is also sometimes used to address a single man in a formal setting. The term is derived from the Latin word 'sirius' which means 'RESPECTED'.