invite competition

ask for assert call for claim confront defy demand denounce impose require test try

accost arouse beard brave cross dare exact impeach impugn inquire investigate provoke query reclaim stimulate summon tax vindicate

call out face down face off face the music fly in the face of hang in insist upon make a point of make a stand object to search out stand up to stick it out throw down the gauntlet

deny

answer calm dodge ignore

agreement decision victory

brave buck call out confront dare defy denounce dispute face-off go eyeball to eyeball with go one on one with go toe to toe with go up against hang in insist upon investigate make a stand object to question stand up to throw down the gauntlet

refuse reject