'sporadically' originates from Greek, specifically the word 'sporadikos,' where 'spora' meant 'scattered.' 'Recognized' comes from Latin, specifically the word 'recognoscere,' where 're-' meant 'again' and 'cognoscere' meant 'to know.'

'sporadically' changed from the Greek word 'sporadikos' to the modern English word 'sporadic,' and eventually became 'sporadically.' 'Recognized' evolved from the Latin word 'recognoscere' to the modern English word 'recognize.'

Initially, 'sporadically' meant 'scattered or dispersed,' and 'recognized' meant 'to know again.' Over time, 'sporadically-recognized' evolved to mean 'acknowledged at irregular intervals.'