'unrealistically-adapted' originates from the combination of 'unrealistic' and 'adapted'. 'Unrealistic' comes from 'un-' meaning 'not' and 'realistic' meaning 'having or showing a sensible and practical idea of what can be achieved or expected'. 'Adapted' comes from Latin 'adaptare', meaning 'to fit to'.

'Unrealistically-adapted' is a modern English compound adjective formed by combining 'unrealistic' and 'adapted'.

Initially, 'unrealistic' meant 'not realistic', and 'adapted' meant 'modified to suit a new purpose'. Together, they describe something modified in a way that is not feasible.