| disregard(verb, trip, fall, blow, ignore) |
| dropping the ball(noun, verb, expression, idiom, fight) |
| error(noun, correct, fault, mistake, lapse) |
| fail(verb, disregard, trip, fall, neglect) |
| fail to notice(verb, expression, idiom, disregard, pass) |
| fall(verb, slip, collapse, stumble, skip) |
| fall down(verb, expression, slip, stumble, flop) |
| fall into error(expression, idiom) |
| fall over(verb, expression, fall, slip, collapse) |
| flop(verb, trip, slip, struggle, stumble) |
| fluff(noun, verb, fall, correct, informal) |
| flummox(verb, trip, slip, stumble, labor) |
| foozle |
| forget(verb, disregard, trip, fall, ignore) |
| foul up(verb, expression, blunder, stumble, flop) |
| founder(verb, trip, fall, slip, collapse) |
| frolic(verb, trip, fall, slip, collapse) |
| fumble(verb, stumble, flop, bungle, err) |
| get signals crossed(verb, expression, idiom, misconstrue, misunderstand) |
| go amiss |