Firm \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.

Source: Webster's Revised Unabridged Dictionary (1913)