'untoned' originates from the prefix 'un-' meaning 'not' and the word 'toned' from the Old French 'ton' meaning 'sound' or 'tone'.

'toned' changed from the Old French word 'ton' and eventually became the modern English word 'tone'.

Initially, 'tone' referred to sound or musical pitch, but over time it evolved to include the firmness or definition of muscles or skin.