| nescient(adjective, innocent, ignorant, unfamiliar, unconscious) |
| nonconceiving |
| not with it(expression, idiom) |
| obdurate(adjective, hard, careless, indifferent, cruel) |
| obtuse(adjective, hard, innocent, unfeeling, unsympathetic) |
| shallow(adjective, innocent, thick, unfamiliar, unconscious) |
| soulless(adjective, hard, careless, indifferent, cruel) |
| spiritless(adjective, hard, careless, indifferent, cruel) |
| stiff(adjective, hard, careless, indifferent, cruel) |
| stony(adjective, hard, careless, indifferent, cruel) |
| thick(adjective, innocent, green, unfamiliar, unconscious) |
| thick-skinned(adjective, hard, careless, indifferent, cruel) |
| torpid(adjective, hard, careless, indifferent, cruel) |
| tough(adjective, hard, careless, indifferent, cruel) |
| toughened(adjective, hard, careless, indifferent, cruel) |
| unaffected(adjective, hard, careless, indifferent, cruel) |
| unbending(adjective, hard, careless, indifferent, cruel) |
| uncompassionate(adjective, hard, careless, indifferent, cruel) |
| unconcerned(adjective, hard, careless, indifferent, cruel) |
| unconversant(adjective, innocent, thick, unfamiliar, unconscious) |