Origin: 1375–1425;late Middle English (< Old Frenchrepeticion) < Latinrepetītiōn- (stem of repetītiō), equivalent to repetīt(us) (past participle of repetere to repeat) + -iōn--ion
1526, "act of saying over again," from L. repetitionem (nom. repetitio), from repetitus, pp. of repetere "do or say again" (see repeat). Of actions, attested from 1597. Repetitious is recorded from 1675; repetitive is from 1839.