Having consistence or solidity; compact; close in fiber or dense in grain; hard: as, firm flesh; cloth of a firm texture.Strongly fixed; stable; rigid; immovable, or not easily moved: as, a firm foundation.Steady; not tottering or shaking; not relaxed or feeble; vigorous: as, a firm step; a firm seat in the saddle; to rule with a firm hand.Fixed in character; stable; enduring; established; steadfast; stanch: as, firm credit; firm prices; a firm friend; a firm conviction.Strong in action or manner; resolute; positive; confident: as, a firm defense or resistance; a firm answer; the firm handling of a subject in art or literature.Indicating firmness: as, a. firm countenance or demeanor.Determined; positive; distinctly stated.Synonyms Dense. Fast, established, secure.2 and Immovable, stanch, strong, sturdy.To make firm; give consistence to.To fix; establish; confirm.To fix or direct with firmness.To confirm by signing; make valid by subscription or indorsement.n. The firm land; terra firma; in general, the mainland.n. A sign manual; a signature.n. A partnership or association of two or more persons for carrying on a business; a commercial house; a concern; also, the name or title under which associated parties transact business: as, the firm of Hope & Co.