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.
Tellinghuisen disputed that electrifying buildings will drive up costs and threaten the reliability of the electric grid. Judith Kohler, Denver Post, 22 Dec. 2025 Concerns about the facilities also extend to effects from their massive power consumption on the reliability of electricity supplies, and on the water supply from their heavy consumption via cooling and power generation. Ethan Baron, Mercury News, 21 Dec. 2025 The council was asked to submit a formal memorandum within 180 days that identifies challenges to energy affordability and reliability. Jt Moodee Lockman, CBS News, 19 Dec. 2025 Additionally, a merger would enable railroads to compete more effectively with long-haul trucking due to the presence of a single-line service, as opposed to an interline service where interchange points can reduce service reliability. Glenn Taylor, Sourcing Journal, 19 Dec. 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

Browse Nearby Words

Cite this Entry

“Reliability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reliability. Accessed 24 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

Last Updated: - Updated example sentences
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