'self-promoter' originates from the combination of 'self' and 'promoter', where 'self' refers to one's own person and 'promoter' means someone who promotes or advertises.

'self-promoter' evolved from the concept of self-promotion, which became more prevalent in modern times with the rise of social media and personal branding.

Initially, it meant someone who promotes themselves, and this meaning has largely remained the same in modern usage.