'untinted' originates from Modern English, specifically formed from the prefix 'un-' (from Old English 'un-' meaning 'not') + 'tinted', where 'tint' ultimately comes from Latin 'tingere' meaning 'to dye or wet.'

'tint' entered English via Old French 'teint' (past participle of 'teindre') from Latin 'tingere'; it appeared in Middle English as forms like 'tinte'/'tint' and developed the adjective 'tinted'; 'untinted' was formed later in Modern English by adding the negative prefix 'un-'.

Initially it meant 'not dyed or colored,' and over time this basic sense has largely remained: describing something lacking added color or influence.