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
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.
Such a prognosis is almost by definition unreliable; studies show that doctors get such predictions wrong more than half the time. The Editors, National Review, 27 Nov. 2024 Unfortunately, the techniques and technologies needed to anonymize large datasets are not well-developed, are unreliable, and require trade-offs that ultimately limit the utility of the data. Ulrich Boser, Forbes, 25 Nov. 2024 That’s because the baseline for this comparison is the data for 2021, which Asher and other crime experts say is unreliable because the FBI switched crime reporting systems that year and compliance by local police departments plummeted. Matthew Crowley, Louis Jacobson, Austin American-Statesman, 21 Nov. 2024 In addition to high costs, Canadians struggle with unreliable service and limited rural coverage options. Chris Gallagher, USA TODAY, 2 Nov. 2024 See all Example Sentences for unreliable 

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 3 Dec. 2024.

Last Updated: - Updated example sentences
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