Synonyms for reliable

accurate, authentic, bonafide, consistent, constant, credible, dependable, devoted, efficient, fail-safe, faithful, foolproof, good, honest, industrious, infallible, known, legit, loyal, reputable, safe, secure, solid, stable, stalwart, staunch, steadfast, steady, steady-going, sure, sure-fire, sure-fire., surefire, tried and tested, tried and true, true-blue, true-hearted, trusted, trustworthy, trusty, truthful, unerring, unfailing, unimpeachable, unshakeable, unswerving, valid, veracious