challenge Synonyms - page 2

rencounter quiz remonstration remonstrate remonstrance reluct refute recuse recalcitration recalcitrate rebuttal rebut ordeal main challenge whistlestop take the field call into question go against debunk koan Gordian knot face-off blow out of the water jigsaw move in on closed book take the bull by the horns major challenge difficult task object to square off showdown shootout recusal recalcitrancy becall disagree with destabilize trial run assert oneself trouble trial tournament tickler temptation taunt tackle suspect summons summon