'sporadically-supplied' originates from the combination of 'sporadic' and 'supplied'. 'Sporadic' comes from the Medieval Latin 'sporadicus', meaning 'scattered', and 'supplied' is derived from the Latin 'supplere', meaning 'to fill up'.

'Sporadicus' transformed into the English word 'sporadic', and 'supplere' evolved into 'supply', eventually forming the compound adjective 'sporadically-supplied'.

Initially, 'sporadic' meant 'scattered or isolated', and 'supplied' meant 'provided'. Together, they evolved to describe something provided irregularly.