'self-denier' originates from the combination of 'self' and 'denier,' where 'self' refers to one's own person and 'denier' comes from the verb 'deny,' meaning 'to refuse or reject.'

'self-denier' evolved from the Middle English word 'denien,' which meant 'to refuse or reject,' and eventually became the modern English term 'self-denier.'

Initially, it meant 'one who refuses or rejects something,' but over time it evolved into its current meaning of 'a person who practices self-denial.'