| speechless(adjective, close, quiet, soft, low) |
| staid(adjective, calm, firm, sensible, solid) |
| stoic(adjective, cool, blank, aloof, impassive) |
| tempered(verb, adjective, qualified) |
| tranquil(adjective, calm, quiet, soft, reasonable) |
| uncongenial(adjective, cold, shy, unfriendly, antisocial) |
| cautious(adjective, calm, soft, reasonable, gentle) |
| closemouthed(adjective, close, quiet, restrained, still) |
| coldhearted(adjective, person, feelings, detached, impassive) |
| disinterested(adjective, person, quiet, indifferent, thoughtful) |
| earmarked(verb, adjective, superior, unusual, exceptional) |
| furtive(adjective, secret, concealment, sneaky, stealthy) |
| ice-cold |
| impersonal(adjective, cool, indifferent, detached, casual) |
| imperturbable(adjective, calm, cool, firm, sensible) |
| laconic(still, aloof, reticent, hushed, uncommunicative) |
| neutral(adjective, calm, soft, reasonable, gentle) |
| nonchalant(adjective, cool, indifferent, blank, aloof) |
| not talkative(adjective, secret, sneaky, stealthy) |
| passionless(adjective, cool, detached, unfriendly, blank) |