| uncooperative(adjective, difficult, persistent, inflexible, obstinate) |
| willful(adjective, tough, firm, difficult, violent) |
| disorderly(adjective, control, order, resist, violent) |
| indocile(adjective, control, order, difficult, unpleasant) |
| indomitable(adjective, difficult, violent, persistent, obstinate) |
| mutinous(adjective, persistent, obstinate, insistent, dogged) |
| pertinacious(adjective, strong, tough, firm, difficult) |
| stiff(adjective, hard, tough, rough, firm) |
| business-minded |
| firm(adjective, tough, persistent, rigid, inflexible) |
| hidebound(adjective, persistent, obstinate, stubborn, unbending) |
| inexorable(adjective, appearance, tough, firm, violent) |
| resolute(adjective, appearance, hard, tough, rough) |
| severe(adjective, tough, persistent, reserved, obstinate) |
| stony |
| untoward(adjective, control, order, tough, firm) |
| wilful |
| cantankerous(adjective, tough, firm, difficult, persistent) |
| froward(adjective, determined, negative, hostile, persistent) |
| naughty(adjective, bad, misbehaved) |