reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbi-lə-tē How to pronounce reliability (audio)
1
: the quality or state of being reliable
2
: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials

Examples of reliability in a Sentence

we never had reason to question the reliability of the park rangers in the event of an emergency
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Organizations that aspire to succeed in the new digital economy must prioritize innovation, reliability, quality, cost-effectiveness, and security. Chuck Brooks, Forbes.com, 1 Aug. 2025 Given PayPal's reported 400 million active users worldwide last year, service instability has the potential to affect a substantial segment of the U.S. financial landscape, highlighting the importance of digital infrastructure reliability in today's economy. Theo Burman, MSNBC Newsweek, 1 Aug. 2025 If your car has a lot of mileage on it or is a brand not known for reliability, an extended car warranty could help cover the cost of repairs. Brian Sloan, CNBC, 31 July 2025 Fiber: Uses fiber-optic cables for high speeds and reliability. Kara McGinley, USA Today, 29 July 2025 See All Example Sentences for reliability

Word History

First Known Use

1810, in the meaning defined at sense 1

Time Traveler
The first known use of reliability was in 1810

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Cite this Entry

“Reliability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reliability. Accessed 6 Aug. 2025.

Kids Definition

reliability

noun
re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē How to pronounce reliability (audio)
plural reliabilities
: the quality or state of being reliable

Medical Definition

reliability

noun
re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē How to pronounce reliability (audio)
plural reliabilities
: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials

More from Merriam-Webster on reliability

Last Updated: - Updated example sentences
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