| unshakable(adjective, mean, strong, hard, complete) |
| insistent(adjective, set, determined, steady, resolute) |
| stationary(adjective, move, calm, quiet, strong) |
| fast(adjective, adverb, strong, complete, secure) |
| unchangeable(adjective, strong, complete, secure, flat) |
| unrelenting(adjective, mean, hard, firm, determined) |
| obstinate(adjective, mean, hard, rough, firm) |
| relentless(adjective, mean, hard, firm, determined) |
| immutable(adjective, hard, secure, rough, firm) |
| constant(adjective, strong, complete, secure, tough) |
| immobile(adjective, move, calm, quiet, strong) |
| unwavering(adjective, strong, secure, flat, firm) |
| adamant(adjective, mean, strong, hard, secure) |
| stable(adjective, adverb, calm, quiet, strong) |
| definite(adjective, set, clear, strong, complete) |
| enduring(adjective, strong, sound, tough, flat) |
| invariable(adjective, severe, harsh, solid, ordinary) |
| rooted(verb, adjective, strong, hard, secure) |
| steady(adjective, adverb, move, strong, sound) |
| certain(noun, adjective, change, clear, complete) |