請問一個好像是要向人單挑或挑戰的單字

D-u-e-l-
duel is a formal fight with weapons between two people, used in the past to settle a disagreement, especially over a matter of honor(eg;-lady to be wife)Hence to fight, to challenge somebody single-handed to a duel. in a competition or struggle or fighting between two people eg:-the two men duelled to the death in the D-u-e-l-.

找某人決鬥 ～ Challenge someone to a dual.