| balk |
| bankruptcy(noun, decline, ruin, defeat, collapse) |
| bevue |
| blameworthiness(shame, blame, fault, responsibility, disgrace) |
| blunder in etiquette(expression, idiom, break, slip, failure) |
| bomb(noun, decline, ruin, defeat, collapse) |
| bonehead play(expression, failure, error, muddle, blunder) |
| boner(slip, failure, fault, mistake, lapse) |
| breach(break, slip, mess, mistake, indiscretion) |
| break(slip, mess, mistake, breach, indiscretion) |
| breakdown(noun, decline, ruin, defeat, collapse) |
| buck(trip, fall, slip, collapse, skip) |
| bust(noun, decline, ruin, defeat, collapse) |
| canter(trip, fall, slip, collapse, skip) |
| checkmate(noun, decline, ruin, defeat, collapse) |
| collapse(noun, verb, decline, ruin, defeat) |
| colossal blunder(expression, break, slip, failure, mess) |
| confuse(verb, trip, fall, slip, collapse) |
| confusion(noun, fault, mess, mistake, lapse) |
| contrition(shame, blame, fault, responsibility, disgrace) |