'unevenly-performed' originates from the combination of 'unevenly' and 'performed'. 'Unevenly' comes from 'uneven', which originates from Old English 'unefen', where 'un-' meant 'not' and 'efen' meant 'even'. 'Performed' comes from Old French 'parfournir', where 'par-' meant 'completely' and 'fournir' meant 'to provide'.

'unevenly' changed from Old English 'unefen' to Middle English 'uneven', and 'performed' evolved from Old French 'parfournir' to Middle English 'performen'.

Initially, 'unevenly' meant 'not even', and 'performed' meant 'to carry out', but over time, 'unevenly-performed' evolved to mean 'executed in an inconsistent manner'.