| hollow(adjective, useless, trivial, empty, insufficient) |
| impoverished(adjective, empty, young, impotent, sterile) |
| impracticable(adjective, weak, stupid, idle, trivial) |
| impractical(adjective, weak, stupid, idle, trivial) |
| inactive(adjective, dull, moderate, low, stiff) |
| inane(adjective, inutility) |
| insufficient(adjective, weak, slight, poor, small) |
| jejune |
| niggardly(weak, poor, insufficient, scarce) |
| no-good(adjective, poor, base, inferior, insignificant) |
| nugatory(adjective, poor, base, inferior, insignificant) |
| off(dull, late, behind) |
| paltry(adjective, slight, poor, base, small) |
| powerless(adjective, weak, silly, stupid, inferior) |
| scant(adjective, slight, poor, inadequate, limited) |
| scanty(adjective, weak, slight, poor, thin) |
| senseless |
| sine prole(expression, idiom, unproductiveness) |
| sluggish(dull, late, behind) |
| sparse(adjective, weak, slight, poor, thin) |