reliable
Americanadjective
adjective
Synonym Usage
Reliable, infallible, trustworthy apply to persons, objects, ideas, or information that can be depended upon with confident certainty. Reliable suggests consistent dependability of judgment, character, performance, or result: a reliable formula, judge, car, meteorologist. Infallible suggests the complete absence of error, breakdown, or poor performance: an infallible test, system, marksman. Trustworthy emphasizes the steady and honest dependability which encourages one's confidence, belief, or trust: trustworthy and accurate reports.
Other Word Forms
Etymology
Origin of reliable
Compare meaning
How does reliable compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
Calling something reliable means you can count on it to come through when you need it; it's dependable. If you're headed out for an around-the-world sailing trip, hopefully your lifejacket is reliable. You can certainly rely on something reliable because it's trustworthy and responsible. Reliable people usually show up on time, never flake out, and always tell the truth. A reliable car isn't likely to break down and will get you from place to place safely. And if you happen to lose your trusty sidekick, good luck looking for a reliable replacement.
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!
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.
Remittances flowed into remote villages where the most reliable way to reinvest the windfall was to send another family member across the Sahara.
From The Wall Street Journal ● Aug. 7, 2026
Those figures come from the Federal Reserve’s Survey of Consumer Finances, the most reliable snapshot we have of what Americans actually hold.
From MarketWatch ● Aug. 6, 2026
Despite the initiatives' good intentions, the diplomatic source said, "there are no reliable figures."
From Barron's ● Aug. 6, 2026
It’s likely that during this transition period, EA will depend more on its reliable releases rather than testing out new smaller games.
From Los Angeles Times ● Aug. 5, 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
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
