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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.
That book, published in 2021, generated heated debate about the origins of inequality and the reliability of the archaeological record, and it was ultimately admired more for the force of its argument than for its account of the earliest societies. Linda Kinstler, The Atlantic, 1 Dec. 2025 Meanwhile, the water- and sweat-resistant design adds reliability during commutes and workouts. PC Magazine, 1 Dec. 2025 This renewable, low-carbon fuel can be burned to generate heat and electricity or refined further to power machinery with impressive consistency and reliability. Bojan Stojkovski, Interesting Engineering, 30 Nov. 2025 Gas fireplaces For those who enjoy the look of real flames without the hassle of gathering wood, gas fireplaces offer convenience and reliability. Angie Hicks, Boston Herald, 30 Nov. 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 4 Dec. 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

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