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 However, knowledgeable criminologists consider the 2021 data unreliable because the FBI changed its reporting system that year. Arthur L. Kellermann, Forbes, 24 Oct. 2024 Wright and other advocates for diabetes patients who need insulin to survive worry the nation's supply has become unreliable. Ken Alltucker, USA TODAY, 24 Oct. 2024 Free onboard wifi has become the latest battleground between the world’s leading airlines as the once expensive and unreliable service finally delivers quality comparable to being at home. Orianna Rosa Royle, Fortune Europe, 18 Oct. 2024 That diagnosis, the report alleges, along with the lithium treatment, could make Sneed an unreliable witness. Brenna Ehrlich, Rolling Stone, 9 Oct. 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 31 Oct. 2024.

Last Updated: - Updated example sentences
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