'unfeasibly-altered' originates from the combination of 'unfeasibly' and 'altered'. 'Unfeasibly' comes from 'un-' meaning 'not' and 'feasible' meaning 'possible or practical'. 'Altered' is the past participle of 'alter', which comes from Latin 'alterare', meaning 'to change'.

'Unfeasibly' evolved from the Old French 'faisable', meaning 'doable', combined with the prefix 'un-' to indicate negation. 'Altered' comes from the Latin 'alterare', which passed into Middle English as 'alteren'.

Initially, 'unfeasibly' meant 'not possible', and 'altered' meant 'changed'. Together, they describe something changed in an impractical way.