Synonyms for firm

adamant, agency, assertive, assured, business, certain, committed, company, conclusive, corporation, determined, devoted, emphatic, enterprise, established, fixed, hard, hard-line, immovable, industrious, insistent, office, overstrict, resolute, rigid, secure, solid, stable, stalwart, staunch, steadfast, steady, stiff, strong-minded, sturdy, tough, unbendable, unbending, uncompromising, unflinching, unhesitating, unshakable, unshakeable, unshaken, unshrinking, unswerving, unwavering, unyielding