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

From The Wall Street Journal • Apr. 24, 2026

Reliable sea ice forecasts can support both traditional livelihoods and modern industries that operate in or near Arctic waters.

From Science Daily • Feb. 6, 2026

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

From Salon • Nov. 30, 2025

Reliable economic figures are hard to come by and a large portion of incomes are earned under the table in the informal sector.

From Barron's • Nov. 14, 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)

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Positive Words to Describe a Person

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

"My Favorite Chaperone," Vocabulary from the short story

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!