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re·li·a·ble

reliable

pronunciation:
rih laI bl
part of speech: adjective
definition: capable of being relied on or trusted; dependable.
The appearance of these flowers is always a reliable sign of spring.The quality of his work was not remarkable, but he was valued because he was reliable.You're lucky to find a reliable mechanic.
synonyms:
dependable, steadfast, steady, sure, trustworthy, trusty
antonyms:
doubtful, dubious, forgetful, unreliable
similar words:
authentic, authoritative, conscientious, credible, creditable, faithful, good, infallible, loyal, responsible, scrupulous, secure, solid, sound, staunch, true, unerring
derivations: reliably (adv.), reliability (n.)