| cold-blooded(expression, idiom, feelings, emotions, relations) |
| aloof(adjective, character, personality, traits) |
| apathetic(adjective, character, personality, traits) |
| as cold as charity(expression, idiom, feelings, emotions, relations) |
| brute(adjective, attitude, characteristics, traits) |
| cool(adjective, character, personality, traits) |
| disinterested(adjective, character, personality, traits) |
| half-hearted(adjective, character, personality, traits) |
| insensitive(adjective, attitude, characteristics, traits) |
| self-reliant(adjective, communication, personality, traits) |
| unconcerned(adjective, character, personality, traits) |
| as hard as nails(expression, idiom, feelings, emotions, relations) |
| bleak(adjective, attitude, characteristics, traits) |
| hard-boiled(adjective, character, personality, traits) |
| hard-grained(adjective, character, personality, traits) |
| harsh(adjective, character, personality, traits) |
| heartless(adjective, attitude, characteristics, traits) |
| heinous(adjective, character, personality, traits) |
| horrible(adjective, character, personality, traits) |
| impassible(adjective, character, personality, traits) |