| steadfast(adjective, calm, close, strong, secure) |
| firm(noun, adjective, calm, close, strong) |
| resolute(adjective, calm, close, strong, secure) |
| determined(adjective, strong, flat, firm, total) |
| unfaltering(adjective, feature, state, characteristic, strong) |
| steady(adjective, calm, close, strong, secure) |
| unswerving(adjective, close, strong, correct, firm) |
| unyielding(adjective, strong, secure, flat, firm) |
| stubborn(adjective, secure, firm, intense, deliberate) |
| staunch(adjective, calm, close, strong, secure) |
| loyal(adjective, close, correct, firm, honest) |
| constant(adjective, calm, close, strong, secure) |
| fixed(adjective, strong, secure, flat, firm) |
| rigid(adjective, determined, resolute, persistent, constant) |
| unflinching(adjective, strong, flat, firm, certain) |
| persistent(adjective, strong, flat, firm, intense) |
| uncompromising(adjective, determined, fixed, resolute, purpose) |
| unshakable(adjective, determined, steady, definite, resolute) |
| faithful(adjective, close, correct, firm, true) |
| inflexible(adjective, strong, secure, flat, firm) |