| impartial(adjective, indifferent, detached, distant, apathetic) |
| impervious(adjective, indifferent, detached, distant, apathetic) |
| inattentive(adjective, indifferent, detached, distant, apathetic) |
| indefatigable(adjective, persevering) |
| indulgent(adjective, calm, quiet, understanding, gentle) |
| indurated(adjective, cool, blank, aloof, unemotional) |
| inexcitable(adjective, cool, blank, aloof, unemotional) |
| inexpressive(adjective, cool, blank, aloof, unemotional) |
| insusceptible(adjective, cool, blank, aloof, unemotional) |
| irritable |
| lasting(adjective, persevering) |
| lenient(adjective, calm, quiet, understanding, gentle) |
| liberal |
| listless(adjective, indifferent, detached, distant, apathetic) |
| manageable(adjective, calm, quiet, gentle, subdued) |
| matter-of-fact(adjective, calm, cool, blank, aloof) |
| mild-tempered(adjective, calm, quiet, understanding, gentle) |
| nerveless(adjective, calm, cool, steady, tranquil) |
| noble |
| nonpartisan(adjective, indifferent, detached, distant, apathetic) |