'unresponsive' originates from the prefix 'un-' meaning 'not' and the word 'responsive' from Latin 'respondere', where 're-' meant 'again' and 'spondere' meant 'to promise'.

'unresponsive' evolved from the combination of 'un-' and 'responsive', which was derived from the Latin 'respondere'.

Initially, it meant 'not answering or replying', but over time it evolved into its current meaning of 'not reacting or responding to stimuli or requests'.