'sporadically' originates from Greek, specifically the word 'sporadikos,' where 'spora' meant 'scattered.' 'Reviewed' comes from the Latin word 'revidere,' where 're-' meant 'again' and 'videre' meant 'to see.'

'sporadikos' transformed into the Medieval Latin word 'sporadicus,' and eventually became the modern English word 'sporadic.' 'Revidere' transformed into the Old French word 'reviser,' and eventually became the modern English word 'review.'

Initially, 'sporadic' meant 'scattered or dispersed,' and 'review' meant 'to see again.' Over time, 'sporadically-reviewed' evolved to mean 'reviewed at irregular intervals.'