| inappreciable(adjective, useless, unfit) |
| incomplete |
| indecisive(weak, inferior, inadequate, limited, feeble) |
| indignant(adjective, keen, violent, anxious, eager) |
| indisposed |
| inelegant(awkward, inept, bulky, ungainly) |
| innocuous(inferior, inadequate, limited, feeble, useless) |
| inproficient(adjective, weak, inadequate, unfit, unqualified) |
| intolerant(adjective, keen, violent, anxious, eager) |
| inutile(adjective, useless, unfit) |
| invalid(adjective, useless, unfit) |
| irascible(adjective, keen, violent, anxious, eager) |
| irritable(adjective, keen, violent, anxious, eager) |
| itchy(adjective, keen, violent, anxious, eager) |
| jejune |
| kaput(adjective, useless, unfit) |
| keen(adjective, anxious, eager, irritable, restless) |
| lame(inferior, inadequate, limited, feeble, useless) |
| limited(inferior, inadequate, feeble, useless, vain) |
| losing(adjective, weak, inadequate, unfit, unqualified) |