"abolish by authoritative act, repeal," 1520s, from Latin abrogatus, past participle of abrogare "to annul, repeal (a law)," from ab "off, away from" (see ab-) + rogare "propose (a law), ask, request," apparently a figurative use of a PIE verb meaning literally "to stretch out (the hand)," from root *reg- "move in a straight line." Form abrogen, from Old French abroger, is recorded from early 15c. Related: Abrogated; abrogating; abrogative.