unreliable

adjective

un·​re·​li·​able ˌən-ri-ˈlī-ə-bəl How to pronounce unreliable (audio)
: not reliable : undependable, untrustworthy
an unreliable friend
an unreliable source of funding
an unreliable car
unreliability noun
the unreliability of the data
a person with a reputation for unreliability
unreliably adverb
a method that works unreliably

Examples of unreliable in a Sentence

Recent Examples on the Web New Hampshire is susceptible to extreme weather, so, like most of its New England neighbors, its power grid is vulnerable and unreliable. Scott Cohn, CNBC, 11 July 2024 The prosecutors pointed to that recording as evidence that her testimony of domestic abuse was unreliable. Ellen Moynihan, New York Daily News, 3 July 2024 And Costner’s off-screen political antics have made Horizon unreliable, given his recent endorsement of the least credible Democrat politicians, including Pete Buttigieg in his 2020 presidential campaign and Liz Cheney for her role in the J6 show trial. Armond White, National Review, 3 July 2024 But as time goes on, Lena's unsettlingly unreliable memory and Sebastian's controlling behavior start to come to light. Lizz Schumer, Peoplemag, 29 June 2024 See all Example Sentences for unreliable 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'unreliable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1810, in the meaning defined above

Time Traveler
The first known use of unreliable was in 1810

Dictionary Entries Near unreliable

Cite this Entry

“Unreliable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreliable. Accessed 26 Jul. 2024.

Last Updated: - Updated example sentences
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