Definitions

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.

Reliable greenhouse gas measurements are a fundamental part of creating effective climate policies and evaluating progress toward emissions reductions.

From Science Daily • Jun. 18, 2026

Reliable birth control allowed women to plan careers with a predictability long afforded to men.

From The Wall Street Journal • Apr. 24, 2026

"Reliable intelligence indicates that Aidaros Alzubidi and others have escaped in the dead of night," a statement from the coalition said, detailing a boat-and-plane journey from Aden to Abu Dhabi via Somaliland and Somalia.

From Barron's • Jan. 8, 2026

Reliable and responsive customer support can also make a significant difference when troubleshooting issues.

From Salon • Nov. 30, 2025

Reliable information about who could be trusted meant that small bands could expand into larger bands, and Sapiens could develop tighter and more sophisticated types of cooperation.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari

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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