IPA: /hɪmˈsɛlf/
KK: /hɪmˈsɛlf/
A pronoun used to refer back to the male person previously mentioned, often for emphasis or to indicate that the person is doing something for themselves.
He looked at himself in the mirror before leaving the house.
Himself → The word is formed from "him" (from Old English "him", meaning him) and "self" (from Old English "self", meaning oneself). The term "himself" refers to the person referred to as 'him' in a reflexive manner, indicating that the action is performed by that person on themselves.
Think of 'him' as the person and 'self' as referring to that person themselves — that's why 'himself' means that person acting on their own.