| cold-blooded(adjective, characteristic, cruelty, atrocity) |
| desired |
| hard-bitten(adjective, characteristic, cruelty, atrocity) |
| hard-boiled(adjective, characteristic, cruelty, atrocity) |
| hardened(adjective, characteristic, cruelty, atrocity) |
| hardhearted(adjective, characteristic, cruelty, atrocity) |
| heartless(adjective, characteristic, cruelty, atrocity) |
| impenitent(adjective, characteristic, cruelty, atrocity) |
| indurated(adjective, characteristic, cruelty, atrocity) |
| insanity |
| insentient(adjective, characteristic, cruelty, atrocity) |
| inured(adjective, characteristic, cruelty, atrocity) |
| lingering(adjective, characteristic, routine, persistence, lasting) |
| long-lived(adjective, characteristic, routine, persistence, lasting) |
| not taught |
| out of control |
| persistent(adjective, characteristic, routine, persistence, lasting) |
| prolonged(adjective, characteristic, routine, persistence, lasting) |
| protracted(adjective, characteristic, routine, persistence, lasting) |
| ruminant(feature, characteristic, trait) |