Synonyms for steadfast

changeless, committed, constant, dedicated, dependable, determined, devoted, diligent, dogged, faithful, firm, hardworking, immovable, immutable, indomitable, industrious, insistent, loyal, persevering, persistent, pertinacious, relentless, reliable, resolute, single-minded, stable, stalwart, staunch, steady, strong-minded, sure, tenacious, true-blue, true-hearted, trusted, trustworthy, trusty, unalterable, unbending, unbent, unblenching, unchangeable, unchanging, uncompromising, undeviating, unfailing, unfaltering, unflinching, unhesitating, unshakable, unshakeable, unshaken, unshrinking, unswerving, unwavering, unyielding