'ahypnia' originates from Greek, specifically the word 'ἀϋπνία' (ahypnia), where 'a-' meant 'without' and 'hypnos' meant 'sleep.'

'ἀϋπνία' transformed into the Latin word 'ahypnia,' and eventually became the modern English word 'ahypnia.'

Initially, it meant 'without sleep,' and this meaning has largely remained the same in modern usage.