| insensible(adjective, mean, hard, harsh, cold) |
| instinct character(expression, behavior, instinct, intuition) |
| instinctive movements(expression, behavior, instinct, intuition) |
| maternal instinct(expression, behavior, instinct, intuition) |
| primitive behaviour(expression, behavior, instinct, intuition) |
| remorseless(adjective, mean, hard, harsh, cold) |
| ruthless(adjective, mean, hard, harsh, cold) |
| satanic(adjective, mean, hard, harsh, cold) |
| sex drive(expression, behavior, instinct, intuition) |
| sixth sense(expression, behavior, instinct, intuition) |
| soulless(adjective, mean, hard, harsh, cold) |
| stony(adjective, mean, hard, harsh, cold) |
| survival instinct(expression, behavior, instinct, intuition) |
| aggressive(spirited, ambitious, bloodthirsty) |
| ambitious(adjective, spirited, aggressive, competing, bloodthirsty) |
| antagonistic(adjective, spirited, aggressive, ambitious, competing) |
| at odds(expression, adjective, spirited, aggressive, rival) |
| barbarous(adjective, mean, hard, harsh, cold) |
| brutal(adjective, mean, hard, harsh, cold) |
| cold(adjective, mean, hard, harsh, indifferent) |