Definition - A particle, word, phrase, or inflection that is used to show respect for a person.

Example -
Your Excellency and Mr.

Etymology -
The word derives from the Latin honorificus, giving honour.

Oxford English Dictionary -
Its first citation in this sense is from 1879:
"They use none of the honorifics so profusely common in Singhalese; the pronoun to, thou, being alone used."
(Bailey in H. Spencer Princ. Sociol. §398 II. 153)

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