| hindered(adjective, dull, moderate, low, stiff) |
| ignoble(adjective, poor, base, inferior, insignificant) |
| impaired(adjective, inutility, unfertile) |
| impeded(adjective, dull, moderate, low, stiff) |
| in vain(adjective, unsuccess) |
| in vicious circle(expression, adjective, idiom, silly, stupid) |
| inappreciable(weak, slight, poor, small, miserable) |
| inapt(weak, poor, insufficient, scarce) |
| incapable(adjective, weak, poor, low, short) |
| incommensurate(weak, poor, insufficient, scarce) |
| inconsiderable(weak, slight, poor, small, inadequate) |
| indecisive(weak, inadequate, limited, feeble, useless) |
| innocuous(inadequate, limited, feeble, useless, vain) |
| insubstantial(weak, slight, poor, small, inadequate) |
| irrelevant(adjective, stupid, insignificant, useless, empty) |
| lame(weak, poor, inadequate, limited, feeble) |
| lank(adjective, thin, spare, bare, slim) |
| lanky(adjective, thin, spare, bare, slim) |
| leached |
| limited(slight, inadequate, feeble, useless, vain) |