An honorific is a word or expression with connotations conveying esteem or respect when used in addressing or referring to a person. Sometimes, the term is used not quite correctly to refer to an honorary title. It is also often conflated with systems of honorific speech in linguistics, which are grammatical or morphological ways of encoding the relative social status of speakers.
Typically, honorifics are used as a style in the grammatical third person, and as a form of address in the second person. Use in the first person, by the honoured dignitary, is uncommon. Some languages have anti-honorific (despective or humilific) first person forms (expressions such as "your most humble servant" or "this unworthy person") whose effect is to enhance the relative honor accorded to the person addressed.
Read more about Honorific: Modern English Honorifics, Examples, Opposition