| inhumane(adjective, animal, mean, rude, violent) |
| invective(adjective, vile, hostile, hateful, belligerent) |
| murderous(adjective, strong, severe, harsh, intense) |
| opprobrious(adjective, hostile, hateful, belligerent, scornful) |
| ornery(adjective, nasty, difficult, informal, rude) |
| ruthless(adjective, animal, appearance, mean, harsh) |
| scurrilous(adjective, vulgar, hostile, hateful, belligerent) |
| unpleasant(adjective, horrible, disagreeable, dreadful, obnoxious) |
| assertive(adjective, aggressive) |
| bad-tempered(adjective, difficult, hostile, hateful, turbulent) |
| barbarian(adjective, rude, violent, cruel, vicious) |
| brute |
| caustic(adjective, attack, respect, hostile, hateful) |
| churlish(adjective, difficult, rude, coarse, turbulent) |
| contumelious(adjective, hostile, hateful, belligerent, quarrelsome) |
| fiendish(adjective, animal, mean, cruel, vicious) |
| hawkish(adjective, energetic, hostile, antagonistic, aggressive) |
| ill-tempered(adjective, rude, coarse, irritable, bad-tempered) |
| intimidating(adjective, hostile, hateful, belligerent, quarrelsome) |
| mean(adjective, animal, nasty, rude, unpleasant) |