'blaspheme' originates from Greek, specifically the word 'blasphēmein,' where 'blaptein' meant 'to injure' and 'phēmē' meant 'reputation.'

'blasphēmein' transformed into the Latin word 'blasphemare,' and eventually became the modern English word 'blaspheme' through Old French 'blasfemer.'

Initially, it meant 'to speak ill of,' but over time it evolved into its current meaning of 'to speak irreverently about sacred things.'