| impertinent(adjective, cool, indifferent, restrained, unfriendly) |
| imperturbable(adjective, calm, cool, restrained, unfriendly) |
| impudent(adjective, cool, indifferent, restrained, unfriendly) |
| impugning(bad, weak, gloomy) |
| inanimate(adjective, dull, flat, low, sad) |
| inappetent |
| incurious(adjective, cool, indifferent, restrained, unfriendly) |
| indisposed(adjective, difficult, awkward, antagonistic, forced) |
| indocile(adjective, difficult, awkward, forced, averse) |
| inert(adjective, dull, weak, easy, slow) |
| infirm(adjective, dull, weak, easy, slow) |
| inhibited(adjective, calm, cool, restrained, unfriendly) |
| inhospitable(adjective, cool, unfriendly, aloof, distant) |
| insensible |
| insensitive |
| insolent(adjective, cool, indifferent, restrained, unfriendly) |
| invalidating(bad, weak, gloomy) |
| involuntary(adjective, difficult, awkward, wary, forced) |
| jaundiced(bad, weak, gloomy, cynical, skeptical) |
| languishing(adjective, dull, weak, easy, flat) |