'self-admirer' originates from the combination of 'self' and 'admire', where 'self' refers to one's own person and 'admire' means to regard with respect or warm approval.

'self-admirer' evolved from the Middle English word 'admiren', which was derived from the Latin 'admirari', meaning 'to wonder at'.

Initially, it meant 'to regard oneself with wonder', but over time it evolved into its current meaning of 'a person who excessively admires themselves'.