| illusion(noun, confusion, fault, mistake, lapse) |
| implosion(noun, decline, ruin, defeat, collapse) |
| impropriety(break, slip, mess, mistake, breach) |
| inadequacy(noun, decline, ruin, defeat, collapse) |
| inadvertency |
| incorrectness(noun, correct) |
| indecorum(break, slip, mess, mistake, breach) |
| infamy(shame, blame, fault, responsibility, disgrace) |
| lapsus calami |
| lead balloon(noun, expression, decline, ruin, defeat) |
| lemon(noun, decline, ruin, defeat, collapse) |
| liability(shame, blame, fault, responsibility, disgrace) |
| loose thread |
| lope(trip, fall, slip, collapse, skip) |
| lose balance(verb, expression, fall, slip, collapse) |
| lose footing(verb, expression, fall, slip, collapse) |
| loser(noun, decline, ruin, defeat, collapse) |
| loss(noun, decline, ruin, defeat, neglect) |
| make a faux pas(verb, expression, idiom, fall, slip) |
| make a mistake(verb, expression, idiom, slip) |