| stubborn(adjective, characteristic, quality, mean, hard) |
| obstinate(adjective, mean, hard, resist, deliberate) |
| headstrong(adjective, tough, firm, resist, determined) |
| unyielding(adjective, mean, hard, tough, deliberate) |
| mulish(adjective, mean, hard, tough, difficult) |
| dogged(adjective, mean, hard, tough, resist) |
| inflexible(adjective, mean, hard, firm, deliberate) |
| intractable(adjective, tough, firm, deliberate, determined) |
| perverse(adjective, mean, hard, tough, firm) |
| willful(adjective, tough, firm, difficult, resist) |
| obdurate(adjective, tough, determined, resolute, obstinate) |
| bullheaded(adjective, tough, firm, difficult, resist) |
| half-assed |
| self-willed(adjective, tough, firm, difficult, determined) |
| adamant(adjective, mean, hard, tough, deliberate) |
| pertinacious(adjective, tough, firm, difficult, resist) |
| stiff-necked(adjective, mean, hard, tough, resist) |
| opinionated(adjective, tough, firm, determined, resolute) |
| wilful(adjective, determined, resolute, uncompromising, unshakeable) |
| hardheaded(adjective, tough, firm, resist, determined) |