| stubborn(adjective, characteristic, quality, strong, tough) |
| headstrong(adjective, tough, difficult, resist, passionate) |
| intentional(adjective, free, keen, happy, agreeable) |
| self-willed(adjective, tough, firm, determined, awkward) |
| voluntary(adjective, free, keen, happy, agreeable) |
| obstinate(adjective, strong, tough, resist, violent) |
| perverse(adjective, mean, tough, difficult, resist) |
| deliberate(adjective, free, keen, happy, agreeable) |
| intended(adjective, free, deliberate, determined, natural) |
| pigheaded(adjective, tough, firm, difficult, resist) |
| wayward(adjective, tough, difficult, violent, wild) |
| conscious(adjective, deliberate, determined, careful, thoughtful) |
| intractable(adjective, tough, firm, difficult, violent) |
| mulish(adjective, tough, difficult, resist, wild) |
| pertinacious(adjective, strong, tough, firm, difficult) |
| studied(adjective, deliberate, determined, careful, thoughtful) |
| wilful(adjective, determined, resolute, uncompromising, unshakeable) |
| bullheaded(adjective, tough, difficult, resist, wild) |
| dogged(adjective, tough, firm, resist, determined) |
| froward(noun, adjective, passionate, deliberate, determined) |