'acataleptic' originates from Greek, specifically the word 'akataleptos,' where 'a-' meant 'not' and 'kataleptos' meant 'grasped or comprehended.'

'akataleptos' transformed into the Latin word 'acatalepticus,' and eventually became the modern English word 'acataleptic.'

Initially, it meant 'not grasped or comprehended,' and this meaning has largely remained the same in modern usage.