reliable

[ri-lahy-uh-buhl] / rɪˈlaɪ ə bəl /

ADJECTIVE

trustworthy

Synonyms

STRONGEST

decent decisive dependable good honest positive predictable respectable safe sincere solid stable steady strong true

WEAK

candid careful certain come-through conscientious constant definite determined devoted faithful firm high-principled honorable impeccable incorrupt loyal okay proved reputable responsible righteous sound staunch steadfast sterling sure there tried tried-and-true true-blue true-hearted trusty unequivocal unfailing unimpeachable upright veracious

Antonyms

STRONGEST

bad broken corrupt dishonest evil false fraudulent inadequate indefinite intermittent soft uncertain undependable unfixed unreal unreliable unrespectable unstable unsteady unsuitable unsure untrustworthy vulnerable weak wobbly

WEAK

deceptive irresponsible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

How reliable a measure is graduation rate in the evaluation of Locke, and what does it show?

From Los Angeles Times • Jun. 16, 2026

Estimates were calculated for every 1km2 of terrestrial land, excluding ice caps and regions where data were insufficient for reliable predictions.

From Science Daily • Jun. 15, 2026

The data suggests that specialised legal AI tools, used by many law firms, are more reliable -- but they are still not immune from hallucinations.

From Barron's • Jun. 15, 2026

There used to be a reliable additional bump from admission to indexes, but it has become less certain recently.

From The Wall Street Journal • Jun. 14, 2026

Isadora kept texting him videos of people’s takes on the military’s involvement in science, which ranged from totally bonkers conspiracy theories to surprisingly informative facts from laypeople, complete with reliable sources.

From "Boy 2.0" by Tracey Baptiste

Vocabulary lists containing reliable

TEKS ELAR Academic Vocabulary List (5th-7th grades)

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Positive Words to Describe a Person

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"My Favorite Chaperone," Vocabulary from the short story

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