1535-45; < Latinrepudiātus (past participle of repudiāre to reject, refuse), equivalent to repudi(um) a casting off, divorce (re-re- + pud(ere) to make ashamed, feel shame (see pudendum) + -ium-ium) + -ātus-ate1
1545, "to cast off by divorce," from adj. meaning "divorced, rejected, condemned" (1464), from L. repudiatus, pp. of repudiare "to divorce or reject," from repudium "divorce, rejection," from re- "back, away" + pudium, probably related to pes-/ped- "foot." The original notion may be of kicking something away, but folk etymology commonly connects it with pudere "cause shame to." Of opinions, conduct, etc., attested from 1824.