1. (adj) firm, house, business firm
the members of a business organization that owns or operates one or more establishments
Synonyms: menage, family, house, sign, theatre, household, planetary house, sign of the zodiac, mansion, theater, business firm, home, firm, star sign
Antonyms: unsteady, unfixed, unforceful, insecure, soft, unstable, unsettled, unhealthy, irresolute, unfaithful, forceless, unsafe
2. (adj) firm, steadfast, steady, stiff, unbendable, unfaltering, unshakable, unwavering
marked by firm determination or resolution; not shakable
Synonyms: staunch, stiff, slopped, pissed, steadfast, blind drunk, unfaltering, besotted, solid, buckram, blotto, pixilated, cockeyed, truehearted, fast(a), potent, unswerving, fast, fuddled, tight, soused, bulletproof, firm, unassailable, immobile, watertight, level, loyal, sozzled, unfluctuating, squiffy, unbendable, unshakable, soaked, unwavering, crocked, rigid, plastered, pie-eyed, sloshed, smashed, strong, starchy, loaded, wet, regular, steady
Antonyms: unhealthy, soft, unsettled, unsafe, forceless, unstable, unsteady, unforceful, irresolute, insecure, unfixed, unfaithful
3. (adj) firm, solid
not soft or yielding to pressure
Synonyms: self-colored, whole, loyal, unanimous, self-coloured, upstanding, fast(a), substantial, stiff, unfluctuating, fast, unshakable, unfaltering, hearty, truehearted, satisfying, unbendable, steadfast, solid, unwavering, steady, firm, immobile, square, strong
Antonyms: insecure, unsafe, unsettled, unfaithful, forceless, irresolute, unhealthy, soft, unfixed, unstable, unsteady, unforceful
4. (adj) firm, strong
strong and sure
Synonyms: loyal, potent, inviolable, fast(a), substantial, stiff, unfluctuating, fast, unshakable, unfaltering, truehearted, warm, hard, unbendable, steadfast, solid, unattackable, unwavering, unassailable, steady, firm, immobile, strong, impregnable, secure
Antonyms: unsteady, unforceful, unstable, unsafe, unfaithful, forceless, unfixed, insecure, irresolute, unsettled, soft, unhealthy
5. (adj) firm
not subject to revision or change
Synonyms: solid, fast(a), unbendable, truehearted, unshakable, stiff, unfaltering, steady, strong, unwavering, fast, unfluctuating, steadfast, loyal, immobile
Antonyms: soft, unhealthy, unsafe, unsettled, unsteady, irresolute, unforceful, insecure, unstable, unfixed, forceless, unfaithful
6. (adj) firm
(of especially a person's physical features) not shaking or trembling
Synonyms: solid, fast(a), unbendable, truehearted, unshakable, stiff, unfaltering, steady, strong, unwavering, fast, unfluctuating, steadfast, loyal, immobile
Antonyms: soft, unhealthy, unstable, unfixed, irresolute, insecure, unforceful, unsettled, unfaithful, forceless, unsteady, unsafe
7. (adj) firm, steady, unfluctuating
not liable to fluctuate or especially to fall
Synonyms: loyal, fast(a), stiff, unfluctuating, fast, unshakable, unfaltering, truehearted, unbendable, steadfast, solid, unwavering, regular, steady, firm, immobile, strong
Antonyms: insecure, unsettled, unforceful, soft, unsteady, forceless, unfaithful, irresolute, unsafe, unfixed, unhealthy, unstable
8. (adj) firm
securely established
Synonyms: solid, fast(a), unbendable, truehearted, unshakable, stiff, unfaltering, steady, strong, unwavering, fast, unfluctuating, steadfast, loyal, immobile
Antonyms: unforceful, soft, forceless, insecure, irresolute, unsettled, unstable, unsafe, unfaithful, unsteady, unfixed, unhealthy
9. (adj) firm
possessing the tone and resiliency of healthy tissue
Synonyms: solid, fast(a), unbendable, truehearted, unshakable, stiff, unfaltering, steady, strong, unwavering, fast, unfluctuating, steadfast, loyal, immobile
Antonyms: irresolute, unsteady, unstable, unsafe, insecure, unforceful, soft, unfixed, unfaithful, unhealthy, forceless, unsettled
10. (adj) fast, firm, immobile
securely fixed in place
Synonyms: loyal, flying, debauched, unfluctuating, riotous, stiff, unwavering, unshakable, fast, dissolute, libertine, truehearted, quick, unbendable, steadfast, degraded, solid, unfaltering, fast(a), steady, firm, dissipated, immobile, degenerate, profligate, strong
Antonyms: unforceful, unsafe, unsteady, insecure, unstable, unsettled, unfaithful, forceless, unhealthy, soft, unfixed, irresolute
11. (verb) firm, loyal, truehearted, fast(a)
unwavering in devotion to friend or vow or cause
Antonyms: unhealthy, unfaithful, unsafe, unfixed, soft, unforceful, unsettled, unsteady, irresolute, insecure, forceless, unstable
12. (verb) tauten, firm
become taut or tauter
Synonyms: tauten, firm
Antonyms: unfaithful, unstable, unsteady, unsafe, forceless, irresolute, unhealthy, unforceful, unfixed, insecure, soft, unsettled
13. (adverb) tauten, firm
make taut or tauter
Synonyms: tauten, firm
Antonyms: irresolute, insecure, unstable, unsteady, forceless, unfaithful, unforceful, unsettled, unfixed, soft, unhealthy, unsafe
14. (adverb) firm, firmly, steadfastly, unwaveringly
with resolute determination
Synonyms: unwaveringly, firmly, hard, securely, firm, steadfastly
Antonyms: unsettled, unsteady, insecure, forceless, unstable, unsafe, soft, unforceful, unfixed, irresolute, unfaithful, unhealthy
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Synonyms and Antonyms of FIRM 
