'self-expression' originates from the combination of 'self' and 'expression', where 'self' refers to one's own person and 'expression' refers to the act of conveying thoughts or feelings.

The term 'self-expression' evolved from the combination of 'self' and 'expression' in the English language, emphasizing the personal aspect of expressing one's thoughts and feelings.

Initially, it meant 'the act of expressing oneself', and this meaning has largely remained the same in modern usage.