| forbidding |
| formal(adjective, indifferent, detached, unfriendly, aloof) |
| frozen(still, motionless) |
| hostile(adjective, indifferent, unfriendly, aloof, remote) |
| ice-cold |
| immovable(adjective, mean, cool, detached, blank) |
| impartial(adjective, calm, fair, indifferent, detached) |
| impervious(adjective, indifferent, detached, distant, apathetic) |
| inactive(adjective, dull, quiet, cool, still) |
| inexcitable(adjective, cool, blank, aloof, serene) |
| insentient(adjective, hard, cold, dead, unfeeling) |
| insusceptible(adjective, cool, blank, aloof, serene) |
| inured(adjective, hard, unfeeling, unsympathetic, hardened) |
| languid(adjective, indifferent, unfeeling, unconcerned, uncaring) |
| mild(adjective, calm, quiet, cool, still) |
| modest |
| negligent(adjective, calm, cool, relaxed, cold) |
| nonemotional(adjective, cool, detached, blank, sober) |
| philosophic(adjective, calm, cool, tolerant, enduring) |
| phlegmatical |