| constant(adjective, secure, firm, determined, steady) |
| cross-grained(adjective, characteristic, quality, refusal, stubbornness) |
| dogmatic(adjective, violent, determined, fixed, fervent) |
| hardened(adjective, characteristic, quality, hard, careless) |
| ornery(adjective, characteristic, quality, tough, firm) |
| unchanging(adjective, characteristic, persistence, stubbornness) |
| undaunted(adjective, characteristic, persistence, stubbornness, tenacious) |
| unfaltering(adjective, firm, intense, deliberate, determined) |
| unflinching(adjective, strong, firm, determined, fixed) |
| ungovernable(adjective, difficult, violent, determined, impulsive) |
| assertive(adjective, characteristic, persistence, stubbornness) |
| audacious(adjective, characteristic, persistence, stubbornness, defiant) |
| decided(adjective, firm, intense, deliberate, determined) |
| fast(adjective, characteristic, quality, strong, secure) |
| mutinous(adjective, characteristic, persistence, stubbornness) |
| perseverant(adjective, characteristic, persistence, stubbornness) |
| resisting(adjective, characteristic, persistence, tenacity, stubbornness) |
| steady(adjective, secure, firm, intense, deliberate) |
| steely(adjective, strong, hard, tough, determined) |
| strong-minded(adjective, determined, fixed, serious, resolute) |