| challenging(adjective, characteristic, persistence, stubbornness, defiant) |
| cohesive(adjective, characteristic, persistence, stubbornness) |
| continuing(adjective, characteristic, persistent, continuous, hardened) |
| coriaceous(adjective, characteristic, persistence, tenacity, stubbornness) |
| deep-rooted(adjective, characteristic, strength, persistent, continuous) |
| disinclined(adjective, characteristic, persistence, stubbornness, unwilling) |
| dour(adjective, tough, harsh, cruel, determined) |
| durable(adjective, characteristic, persistence, stubbornness) |
| fractious(adjective, violent, wild, deliberate, determined) |
| gritty(adjective, characteristic, persistence, hardness, stubbornness) |
| imperious(adjective, characteristic, persistence, stubbornness) |
| inconvincible(adjective, characteristic, quality, determined, resolute) |
| incorrigible(adjective, passionate, violent, enthusiastic, fervent) |
| indelible(adjective, characteristic, quality, refusal, stubbornness) |
| indocile(adjective, characteristic, tough, difficult, violent) |
| industrious(adjective, characteristic, persistence, stubbornness) |
| ineradicable(adjective, characteristic, persistent, continuous, hardened) |
| inveterate(adjective, characteristic, quality, firm, determined) |
| naughty(adjective, characteristic, persistence, stubbornness) |
| ossified(adjective, characteristic, quality, determined, resolute) |