| fixed(adjective, firm, solid, certain, determined) |
| loyal(adjective, strong, firm, solid, determined) |
| sure(adjective, complete, firm, total, solid) |
| enduring(adjective, complete, firm, total, solid) |
| unshakable(adjective, clear, firm, solid, certain) |
| unyielding(adjective, strong, firm, intense, certain) |
| decided(adjective, firm, intense, certain, deliberate) |
| stubborn(adjective, firm, intense, deliberate, determined) |
| abiding(adjective, complete, firm, total, solid) |
| resolved(adjective, firm, certain, limited, definite) |
| stalwart(adjective, intense, deliberate, determined, resolute) |
| undeviating(adjective, firm, solid, intense, certain) |
| faithful(adjective, strong, firm, steady, regular) |
| pertinacious(adjective, strong, firm, energetic, determined) |
| unbendable |
| obstinate(adjective, firm, intense, deliberate, determined) |
| purposeful(adjective, strong, firm, determined, serious) |
| reliable(adjective, firm, solid, stable, fixed) |
| set(verb, adjective, firm, solid, certain) |
| single-minded(adjective, firm, solid, intense, deliberate) |