'sporadically-regarded' originates from the combination of 'sporadic' and 'regard', where 'sporadic' comes from the Medieval Latin 'sporadicus', meaning 'scattered', and 'regard' from Old French 'regarder', meaning 'to look at'.

'sporadicus' transformed into the English word 'sporadic', and 'regarder' became 'regard' in modern English, eventually forming the compound adjective 'sporadically-regarded'.

Initially, 'sporadic' meant 'scattered or isolated', and 'regard' meant 'to look at or consider'. Together, they evolved to mean 'considered in an irregular manner'.