| stalwart(adjective, calm, person, body, strong) |
| unfeeling(noun, adjective, calm, mean, hard) |
| unsympathetic(adjective, mean, hard, cool, severe) |
| vigorous(adjective, strong, sound, fit, smart) |
| brawny(adjective, person, body, strong, vigorous) |
| bully(noun, person, mean, cheat, rough) |
| fibrous(adjective, feature, characteristic, strong, thin) |
| fighter(noun, bad, temper, brave, rebel) |
| muscular(adjective, person, body, strong, sound) |
| steely(adjective, strong, hard, firm, serious) |
| hood(noun, person, mean, attack, slang) |
| scoundrel(noun, bad, temper, brave, rebel) |
| tenacious(adjective, strong, firm, determined, resolute) |
| troublesome(adjective, characteristic, severe, difficulty, difficult) |
| obstinate(adjective, mean, strong, hard, rough) |
| chewy(adjective, feature, characteristic, structure, sinewy) |
| exacting(adjective, dull, hard, easy, severe) |
| hard-boiled(noun, adjective, mean, strong, hard) |
| ruthless(adjective, strong, hard, severe, rough) |
| strict(adjective, strong, hard, easy, severe) |