'sporadically-linked' originates from the word 'sporadic,' which comes from the Medieval Latin 'sporadicus,' meaning 'scattered,' and 'linked,' from the Old English 'hlencan,' meaning 'to join or connect.'

'sporadicus' transformed into the English word 'sporadic,' and 'hlencan' evolved into 'link,' eventually forming the modern English term 'sporadically-linked.'

Initially, 'sporadic' meant 'scattered or isolated,' and 'link' meant 'to join,' but together they evolved to describe connections that are irregular or not continuous.