'sporadically' originates from Greek, specifically the word 'sporadikos,' where 'spora' meant 'scattered.' 'Confirmed' originates from Latin, specifically the word 'confirmare,' where 'con-' meant 'together' and 'firmare' meant 'to strengthen.'

'sporadically' changed from the Greek word 'sporadikos' and eventually became the modern English word 'sporadic.' 'Confirmed' transformed from the Latin word 'confirmare' and eventually became the modern English word 'confirm.'

Initially, 'sporadically' meant 'scattered or dispersed,' and 'confirmed' meant 'to strengthen or establish.' Over time, 'sporadically-confirmed' evolved to mean 'occasionally verified.'