reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbi-lə-tē How to pronounce reliability (audio)
Synonyms of reliabilitynext
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.
His play strength and reliability give him a shot. Eddie Brown, San Diego Union-Tribune, 14 Apr. 2026 Its concerns include safety, reliability and cost — but also worries about the technology’s readiness and whether Sawtooth Energy, which has no other projects on its resume, can deliver. Mark Dee, Idaho Statesman, 13 Apr. 2026 Under the legislation, the state will ensure projects are required to improve reliability and are completed at a reasonable cost. Jt Moodee Lockman, CBS News, 13 Apr. 2026 Similar designs might help manage heat in electronics, improve energy-efficient building materials, or support small, off-grid power systems where reliability matters more than peak output. Rupendra Brahambhatt, Interesting Engineering, 12 Apr. 2026 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

Browse Nearby Words

Cite this Entry

“Reliability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reliability. Accessed 16 Apr. 2026.

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

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