| mild(adjective, close, quiet, gentle, restrained) |
| modest(quiet, gentle, aloof, reserved, reticent) |
| obdurate(adjective, mean, hard, cool, harsh) |
| pitiless(adjective, hard, care, heartless, merciless) |
| placid(adjective, calm, quiet, gentle, aloof) |
| restrained(adjective, quiet, gentle, aloof, reserved) |
| retiring(adjective, quiet, gentle, aloof, reserved) |
| serene(adjective, quiet, gentle, aloof, reserved) |
| sharp(adjective, cool, severe, keen, intense) |
| shivering(adjective, cold) |
| soulless(adjective, mean, hard, harsh, cold) |
| strait-laced |
| thick-skinned(adjective, cool, detached, blank, sober) |
| unhurried(adjective, unexcitable) |
| unimpassioned(adjective, cool, detached, blank, sober) |
| antarctic(adjective, cool, solid, cold, raw) |
| apathetical(adjective, temper, cold, negative, dead) |
| asexual |
| bone-chilling |
| drugged |