| firm | (adjective) unwavering in devotion to friend or vow or cause | Synonyms: fast, loyal, truehearted |
|---|
| (adjective) securely fixed in place | Synonyms: fast, immobile |
| (adjective) strong and sure | Synonyms: strong |
| (adjective) not soft or yielding to pressure | Synonyms: solid |
| (adjective) possessing the tone and resiliency of healthy tissue | - |
| (adjective) marked by firm determination or resolution; not shakable | Synonyms: steadfast, steady, stiff, unbendable, unfaltering, unshakable, unwavering |
| (adjective) securely established | - |
| (adjective) not subject to revision or change | - |
| (adjective) (of especially a person's physical features) not shaking or trembling | - |
| (adjective) not liable to fluctuate or especially to fall | Synonyms: steady, unfluctuating |
| infirm | (adjective) lacking bodily or muscular strength or vitality | Synonyms: debile, decrepit, feeble, rickety, sapless, weak, weakly |
|---|
| (adjective) lacking firmness of will or character or purpose | - |
| unfirm | (adjective) (of soil) unstable | Synonyms: shifting |
|---|
| (adjective) not firmly or solidly positioned | Synonyms: unsteady |