| angry(severe, violent, hostile, brutal, stern) |
| barbaric(adjective, violent, cruel, vicious, fierce) |
| ferocious(adjective, violent, wild, hostile, brutal) |
| imperious(adjective, assertive) |
| industrious(adjective, strong, keen, intense, energetic) |
| intense(adjective, clear, tough, severe, keen) |
| sharp(adjective, keen, intense, cross, energetic) |
| spirited(adjective, strong, keen, intense, energetic) |
| stubborn |
| tough(adjective, clear, strong, severe, lively) |
| unfriendly(adjective, sharp, rude, hostile, unsympathetic) |
| warring(adjective, energetic, hostile, antagonistic, radical) |
| bloodthirsty(adjective, severe, violent, cruel, vicious) |
| brash(adjective, smart, familiar, forceful, arrogant) |
| cheeky(adjective, smart, informal, familiar, forceful) |
| cocky(adjective, informal, forceful, arrogant, uncompromising) |
| competitive(adjective, oppose, vicious, fierce, unfriendly) |
| enthusiastic(adjective, keen, intense, energetic, lively) |
| fast-growing |
| hard-hitting |