| boo-boo(noun, break, fault, mistake, lapse) |
| cuckoo(noun, slang, sick, mad person) |
| fathead |
| fluff(noun, verb, fall, fault, mistake) |
| blow(verb, ruin, fail, abuse, harm) |
| boner(noun, correct, slip, informal, failure) |
| fail(verb, confuse, overlook, misconstrue, misunderstand) |
| goofball |
| howler(noun, slip, failure, fault, mistake) |
| sin(noun, verb, fall, slip, failure) |
| bad behavior(expression, rudeness, indecency, unseemliness) |
| foul up(verb, expression, phrasal verb, blow, harm) |
| nerd(informal, call, noun, slang, fool) |
| slip-up(noun, slip, failure, fault, mistake) |
| stumble(noun, verb, fall, correct, slip) |
| asshole |
| bozo |
| clanger(noun, mistake, indiscretion, blunder, gaffe) |
| dolt(noun, bungler) |
| foozle(noun, correct) |