Reliable
Synonyms: Dependable, well founded, authentic, attested, genuine, sound, copper-bottomed, faithful, steady, staunch, unwavering, loyal, dedicated, unfailing, certain, truthful, safe, tried and tested, well engineered, responsible, proven, solid, safe as houses, good, well grounded, definitive, valid, from the horse's mouth, true, trustworthy, devoted, steadfast, unswerving, constant, trusty, committed, infallible, sure, honest, fail-safe, well built, reputable, established, stable, and secure.
Example Sentences
She is a reliable friend.
Reliable sources confirm the news.
The car is highly reliable.
He gave reliable contact information.