1. Fixed; hence, closely compressed; compact; substantial; hard; solid; applied to the matter of bodies; as, firm flesh; firm muscles, firm wood.
2. Not easily excited or disturbed; unchanging in purpose; fixed; steady; constant; stable; unshaken; not easily changed in feelings or will; strong; as, a firm believer; a firm friend; a firm adherent. Under spread ensigns, moving nigh, in slow but firm battalion. (Milton) By one man’s firm obediency fully tried. (Milton)
3. Solid; opposed to fluid; as, firm land.
4. Indicating firmness; as, a firm tread; a firm countenance.
Synonym: Compact, dense, hard, solid, stanch, robust, strong, sturdly, fixed, steady, resolute, constant.
Origin: oe. Ferme, f. Ferme, fr.L. Firmus; cf. Skr. Dharman support, law, order, dh to hold fast, carry. Cf. Farm, Throne.