| cold-blooded(adjective, hard, careless, apathetic, unfeeling) |
| callous(adjective, mean, hard, harsh, cold) |
| cold(adjective, mean, hard, harsh, indifferent) |
| coldhearted(adjective, mean, hard, harsh, cold) |
| hard(adjective, careless, apathetic, unfeeling, unsympathetic) |
| heartless(adjective, mean, hard, harsh, cold) |
| unfeeling(adjective, hard, cruel, hardened, heartless) |
| hardened(adjective, cruel, heartless, callous, disciplined) |
| hardhearted(adjective, mean, hard, harsh, cold) |
| insensitive(adjective, careless, apathetic, unsympathetic) |
| obdurate(adjective, mean, hard, harsh, cold) |
| pitiless(adjective, hard, care, cruel, unfeeling) |
| unmerciful(adjective, unyielding, unforgiving) |
| unnatural(adjective, evil, vicious, wicked, atrocious) |
| unresponsive(adjective, careless, apathetic, unsympathetic, insensitive) |
| aforethought(adjective, deliberate, careful, thoughtful, cautious) |
| austere(adjective, mean, hard, harsh, cold) |
| barbaric(adjective, animal, malicious) |
| barbarous(adjective, mean, hard, harsh, cold) |
| beastly(adjective, violent, murderous) |