| impracticable(adjective, stupid, idle, useless, trivial) |
| impractical(adjective, silly, foolish, stupid, idle) |
| inefficacious(adjective, arouse bad feelings) |
| nugatory(adjective, poor, base, value, inferior) |
| powerless(adjective, weak, senseless, ridiculous) |
| rounded(adjective, blunt) |
| superficial(adjective, silly, foolish, trivial, empty) |
| trifling(adjective, poor, base, value, silly) |
| unrewarding(adjective, dry, idle, useless, ineffective) |
| unsharpened(adjective, blunt) |
| valueless(adjective, poor, base, value, inferior) |
| wasted |
| commonplace(adjective, dull, flat, ordinary, dry) |
| failed(adjective, unsuccessful, arouse bad feelings) |
| foiled(adjective, unsuccessful, arouse bad feelings) |
| frustrated(adjective, unsuccessful, arouse bad feelings) |
| heavy(adjective, flat, stupid, ordinary, dry) |
| inefficient |
| inept(adjective, weak, stupid, suitable, idle) |
| inutile(adjective, poor, base, stupid, inferior) |