| balky(tough, firm, unreasonable, grim, inflexible) |
| bovine(adjective, determined, resolute, obstinate, uncompromising) |
| bull-headed(adjective, determined, resolute, obstinate, stubborn) |
| deaf(adjective, stubborn, unwilling) |
| pig-headed(adjective, determined, resolute, impulsive, obstinate) |
| steadfast(adjective, tough, firm, determined, resolute) |
| wayward(adjective, tough, difficult, awkward, contrary) |
| wilful(adjective, determined, resolute, uncompromising, unshakeable) |
| bigoted(adjective, determined, resolute, obstinate, uncompromising) |
| doctrinaire(adjective, opinionated, dogmatic) |
| pat(adjective, difficult, determined, resolute, obstinate) |
| unbendable(adjective, determined, resolute, obstinate, uncompromising) |
| unruly(tough, difficult, determined, awkward, impulsive) |
| unshakable(adjective, mean, strong, hard, tough) |
| implacable(adjective, mean, strong, hard, tough) |
| inelastic(adjective, determined, resolute, obstinate, uncompromising) |
| persevering(adjective, tough, firm, determined, unreasonable) |
| strong-willed |
| tough(adjective, mean, strong, hard, firm) |
| ungovernable(tough, difficult, determined, awkward, impulsive) |