'sporadically-attached' originates from the combination of 'sporadic' and 'attached'. 'Sporadic' comes from the Medieval Latin 'sporadicus', meaning 'scattered', and 'attached' from the Old French 'atachier', meaning 'to fasten'.

'Sporadicus' transformed into the English word 'sporadic', and 'atachier' evolved into 'attach', eventually forming the modern English term 'sporadically-attached'.

Initially, 'sporadic' meant 'scattered or isolated', and 'attached' meant 'fastened'. Together, they evolved to describe something that is occasionally connected.