| iced(still, hushed, soundless) |
| ill-humored(low, gloomy, melancholy, miserable, depressed) |
| ill-tempered(low, gloomy, melancholy, miserable, depressed) |
| imperturbable(adjective, cool, unfriendly, blank, aloof) |
| in a bad mood(expression, idiom, gloomy, depressed, pessimistic) |
| in a blue funk(expression, idiom, low, gloomy, depressed) |
| inaudible(adjective, close, quiet, soft, low) |
| incoherent(still, hushed, soundless) |
| inconversable(still, hushed, soundless, taciturnity) |
| indisposed to talk(expression, idiom) |
| indistinct(still, hushed, soundless) |
| indurated(adjective, cool, blank, aloof, unemotional) |
| inexcitable(adjective, cool, blank, aloof, unemotional) |
| inexpressive(adjective, cool, blank, aloof, unemotional) |
| inobtrusive(adjective, quiet, soft, low) |
| inscrutable(adjective, cool, blank, aloof, unemotional) |
| insensible(adjective, cool, blank, aloof, unemotional) |
| insociable |
| insusceptible(adjective, cool, blank, aloof, unemotional) |
| irritable(low, melancholy, miserable, ugly, sullen) |