| indecorous(adjective, wrong, offensive, suitable, improper) |
| ineffectual(adjective, weak, skill, inadequate, inept) |
| inferior(adjective, mean, simple, poor, underprivileged) |
| inharmonious(adjective, wrong, appropriate, false, awkward) |
| invalidate(verb, hurt, ruin, harm, bar) |
| mismatched(adjective, wrong, disagreement, improper) |
| sick(adjective, weak, false, inadequate, unhealthy) |
| undesirable(adjective, inexpedience, inexpedient) |
| undue(wrong, false, awkward, suitable, improper) |
| unskillful(adjective, weak, rude, ready, inadequate) |
| clumsy(adjective, dull, weak, flat, slow) |
| debilitated(adjective, weak, appropriate, ready, feeble) |
| disadvantageous(adjective, negative, disapproving, inexpedience, uncomplimentary) |
| ill(adjective, negative, sick, unhealthy, unwell) |
| ill-equipped(adjective, appropriate, ready, inappropriate, unsuitable) |
| ill-matched(adjective, wrong, improper, inappropriate) |
| impracticable(adjective, inapplicable) |
| inadvisable(adjective, wrong, false, negative, awkward) |
| indispose |
| inexperienced(adjective, dull, weak, flat, slow) |