- challenge
- n1. call, summons, invitation, bidding; notice, nod, beck, bid.2. provocation, dare, gauntlet, glove, gage; confrontation, ultimatum, defiance, scorn, affront; menace, attack, countercharge, stand, opposition.3. question, charge, allegation, imputation, denouncement; complaint, protest, objection, exception, disputation, dissension; expostulation, remonstration, reproach, contradiction, denunciation.4. venture, hazard, risk; problem, puzzle, knot, perplexity, poser; obstacle, frustration, barrier, strait, crisis, Inf. tough job, Inf. hard row to hoe, Inf. hard nut to crack.v5. dare, defy, brave, confront, encounter; face, affront, stand up to; accost, beard, breast, throw down the gauntlet; scorn, Inf. snap the fingers at.6. call to question, question, dispute, protest, take exception, disagree, demur, object, dissent; retort, remonstrate, contradict, denounce, oppose, fulminate.7. invite, arouse, stimulate, inspire; excite, spur on, goad, invigorate, jog, fan, propel.
A Note on the Style of the synonym finder. 2014.