| strong-minded(determined, impulsive, stubborn, reckless, impetuous) |
| stupid(adjective, stubborn) |
| uncontrollable(determined, impulsive, stubborn, reckless, impetuous) |
| ungovernable(determined, impulsive, obstinate, stubborn, reckless) |
| unrelenting(adjective, determined, resolute, obstinate, uncompromising) |
| unruly(determined, impulsive, obstinate, stubborn, reckless) |
| unshakable(adjective, determined, resolute, obstinate, uncompromising) |
| unswayable(adjective, determined, resolute, obstinate, uncompromising) |
| unwavering(adjective, determined, resolute, obstinate, uncompromising) |
| willful(adjective, determined, impulsive, obstinate, stubborn) |
| awkward(obstinate, stubborn, willful) |
| balky |
| cantankerous(obstinate, stubborn, willful) |
| casehardened |
| contumacious(adjective, obstinate, headstrong) |
| difficult(obstinate, stubborn, willful) |
| fractious(obstinate, stubborn, willful) |
| hang tough(expression, obstinate, stubborn, willful) |
| hard-line(obstinate, stubborn, willful) |
| impetuous(impulsive, reckless) |