| inhospitable(adjective, coldhearted) |
| stoic(adjective, calm, impassive, unemotional, laid-back) |
| stony-hearted(adjective, cold, cruel, unfeeling, unsympathetic) |
| unyielding(adjective, mean, hard, tough, harsh) |
| vicious(adjective, cruel, brutal, cold-blooded) |
| barbarous(adjective, animal, mean, hard, tough) |
| blank(adjective, person, feelings, emotions, rocky) |
| blunt(adjective, insensitive) |
| bowelless |
| chilly(adjective, person, feelings, emotions, rocky) |
| coldhearted(adjective, hard, cold, indifferent, detached) |
| expressionless(adjective, person, feelings, emotions, rocky) |
| fierce(adjective, animal, mean, hard, tough) |
| flinty(rocky, pebbly) |
| glacial(adjective, person, feelings, detached, impassive) |
| grim(adjective, animal, mean, hard, tough) |
| hellish(adjective, pitiless) |
| lukewarm(adjective, mean, hard, cool, unpleasant) |
| malicious(adjective, animal, mean, evil, cruel) |
| malign(adjective, animal, mean, cruel, vicious) |