'unjustly-claimed' originates from the combination of 'unjustly' and 'claimed'. 'Unjustly' comes from 'un-' meaning 'not' and 'just' meaning 'fair'. 'Claimed' is derived from the Latin word 'clamare', meaning 'to call out'.

'Unjustly' evolved from the Old French word 'injuste', and 'claimed' from the Latin 'clamare'. Together, they formed the modern English term 'unjustly-claimed'.

Initially, 'unjustly' meant 'not fair', and 'claimed' meant 'to call out or declare'. Over time, 'unjustly-claimed' evolved to mean 'claimed without fairness'.