Firm (?), a. [Compar.Firmer (?); superl.Firmest.] [OE. ferme, F. ferme, fr.L. firmus; cf. Skr. dharman support, law, order, dh� to hold fast, carry. Cf. Farm, Throne.] 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.
Syn. — Compact; dense; hard; solid; stanch; robust; strong; sturdly; fixed; steady; resolute; constant.