| balk(verb, check, disregard, block, delay) |
| block(verb, delay, curb, prevent, burden) |
| confound(verb, cross, frustrate, blank, discredit) |
| contest(disprove, rebut) |
| disallow(verb, decline, reject, oppose, refuse) |
| disavow(verb, decline, reject, oppose, refuse) |
| dissent(verb, oppose, criticize, object, protest) |
| falsify(verb, fake, alter, deny, contradict) |
| frustrate(verb, check, oppose, correct, halt) |
| militate against(verb, phrasal verb, opposition, counteraction) |
| rebel(verb, disregard, ignore, snub, overlook) |
| run against(verb, phrasal verb, opposition, counteraction) |
| abnegate(verb, decline, reject, oppose, refuse) |
| affront(verb, break, ignore, defy, disobey) |
| attack(verb, oppose, criticize, dispute, challenge) |
| baffle(verb, cross, frustrate, blank, thwart) |
| bar(verb, block, delay, curb, prevent) |
| blast(criticize, dispute, challenge, doubt, question) |
| challenge(verb, oppose, criticize, ignore, dispute) |
| checkmate(verb, cross, frustrate, blank, thwart) |