'exactly-altered' is a compound word formed from 'exactly' and 'altered'. 'Exactly' originates from Latin 'exactus', meaning 'precisely', and 'altered' comes from Latin 'alterare', meaning 'to change'.

'exactly' evolved from the Latin 'exactus' through Old French 'exact', while 'altered' transitioned from Latin 'alterare' through Old French 'alterer'.

Initially, 'exactly' meant 'precisely' and 'altered' meant 'changed'. The compound 'exactly-altered' retains these meanings, emphasizing precision in modification.