| blast(verb, criticize, dispute, challenge, doubt) |
| blot out(verb, expression, end, destroy, crush) |
| blow sky high(expression, idiom, upset, break, oppose) |
| blue pencil(verb, expression, remove, withdraw, eliminate) |
| brawl(verb, challenge, deny, doubt, question) |
| break off |
| break with(verb, contradict, countermand) |
| bring to nothing(expression, idiom) |
| buck(verb, check, oppose, challenge, resist) |
| buffer |
| burn(cut, reject, oppose, refuse, bar) |
| burn down(expression, oppose, expose, contest, counter) |
| bypass |
| call all bets off(verb, expression, idiom, restrict, cancel) |
| call in question(verb, expression, idiom, oppose, challenge) |
| call on(verb, expression, decline, reject, oppose) |
| cast aspersions upon(expression, idiom, criticize, dispute, challenge) |
| cast doubt upon(expression, idiom, criticize, dispute, challenge) |
| change(verb, smooth, correct, right, alter) |
| charge(equal, compensate, counterbalance, counterweigh, equipoise) |