'sporadically-made' originates from the word 'sporadic,' which comes from the Medieval Latin 'sporadicus,' meaning 'scattered.' The suffix '-ally' is used to form adverbs, and 'made' is derived from the Old English 'macian,' meaning 'to make.'

'sporadicus' transformed into the English word 'sporadic,' and eventually combined with 'made' to form 'sporadically-made.'

Initially, 'sporadic' meant 'scattered or isolated,' and this meaning has largely remained the same in modern usage when combined with 'made.'