reliable
Americanadjective
adjective
Related Words
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
- nonreliable adjective
- nonreliableness noun
- nonreliably adverb
- quasi-reliable adjective
- quasi-reliably adverb
- reliability noun
- reliableness noun
- reliably adverb
- ultrareliable adjective
- ultrareliablely adverb
Etymology
Origin of reliable
Compare meaning
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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.
The company’s website boasts that its product has been “reviewed as the proven, most reliable and most accurate AI detection tool in the market by third parties including University of Maryland.”
From The Wall Street Journal • Apr. 3, 2026
A hard-boiled egg is something else entirely: firm, portable, reliable, tucked into lunchboxes or sliced over a salad.
From Salon • Apr. 3, 2026
If anything, that underscores the crypto’s one reliable trait—its remarkable staying power despite all the naysayers.
From Barron's • Apr. 3, 2026
Fast, reliable wireless connections are essential in everyday life.
From Science Daily • Apr. 2, 2026
Laney was not known for being a reliable interpreter of conversations.
From "The Vanderbeekers of 141st Street" by Karina Yan Glaser
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.
