| headstrong(adjective, characteristic, quality, stubbornness, obstinate) |
| stiff(adjective, hard, tough, rough, firm) |
| persistent(adjective, characteristic, quality, stubbornness, refusal) |
| unshakable(adjective, characteristic, quality, mean, strong) |
| recalcitrant(adjective, characteristic, quality, stubbornness, resistance) |
| refractory(adjective, characteristic, quality, stubbornness, refusal) |
| insistent(adjective, characteristic, quality, determined, resolute) |
| mulish(adjective, obstinate, characteristic, quality, stubbornness) |
| hard(adjective, characteristic, quality, mean, strong) |
| set(adjective, strong, secure, tough, firm) |
| pertinacious(adjective, characteristic, quality, obstinate, stubbornness) |
| intractable(adjective, characteristic, quality, stubbornness, obstinate) |
| tough(adjective, characteristic, quality, mean, strong) |
| contumacious(adjective, obstinate, characteristic, quality, stubbornness) |
| pigheaded(adjective, characteristic, quality, mean, hard) |
| self-willed(adjective, characteristic, quality, stubbornness, refusal) |
| unbendable(adjective, characteristic, quality, firm, resist) |
| rock-ribbed(adjective, change, position, attitude, determination) |
| unadaptable(adjective, change, position, attitude, determination) |
| unwavering(adjective, secure, firm, intense, deliberate) |