'amnesic' originates from Greek, specifically the word 'amnesikos,' where 'a-' meant 'not' and 'mnasthai' meant 'to remember.'

'amnesikos' transformed into the Latin word 'amnesicus,' and eventually became the modern English word 'amnesic.'

Initially, it meant 'not remembering,' but over time it evolved into its current meaning of 'a person suffering from amnesia.'