| scallywag |
| slacker(noun, idler, shirker) |
| slow(adjective, useless, unfit) |
| trifling(adjective, poor, base, value, inferior) |
| unavailing(adjective, poor, base, stupid, inferior) |
| unessential(adjective, poor, base, inferior, insignificant) |
| unimportant(adjective, poor, base, value, inferior) |
| unproductive(adjective, poor, base, stupid, inferior) |
| waster(noun, person, worthless) |
| black sheep(noun, expression, person, tough, rotten) |
| bounder |
| devil |
| fainéant(noun, industrious) |
| fruitless(adjective, weak, stupid, idle, useless) |
| fustian(adjective, weak, careless, value, insignificant) |
| good for nothing(expression, adjective, idiom, useless, unfit) |
| impracticable(adjective, weak, stupid, idle, useless) |
| improper(adjective, useless, unfit, worthless, unworthy) |
| inappropriate(adjective, useless, unfit, worthless, unworthy) |
| incompetent(noun, adjective, beat, weak, careless) |