provocation (n.)youdaoicibaDictYouDict[provocation 词源字典]
c. 1400, from Old French provocacion (12c.) and directly from Latin provocationem (nominative provocatio) "a calling forth, a summoning, a challenge," noun of action from past participle stem of provocare "to call out" (see provoke).[provocation etymology, provocation origin, 英语词源]