unreliable
adjective
un·re·li·able
ˌən-ri-ˈlī-ə-bəl 
: 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
Examples of unreliable in a Sentence
Recent Examples on the Web
Poor-quality or biased data can lead to inaccurate threat detection, making security systems unreliable.
—
Melkon Hovhannisyan, Forbes.com, 29 Apr. 2025
The new prosecution also agreed that the Snapchat evidence was unreliable, but went a step further than the judge, dismissing the case entirely.
—Tresa Baldas, USA Today, 28 Apr. 2025
And even though many surgeries resulted in injury or death, reporting was unreliable, Cosgrove and colleagues pointed out in a recent review.
—Frieda Klotz, Smithsonian Magazine, 25 Apr. 2025
Any age data prior to 1400 is considered largely unreliable.
—Christopher Watson, ABC News, 21 Apr. 2025
See All Example Sentences for unreliable
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Melkon Hovhannisyan, Forbes.com, 29 Apr. 2025
The new prosecution also agreed that the Snapchat evidence was unreliable, but went a step further than the judge, dismissing the case entirely.
—Tresa Baldas, USA Today, 28 Apr. 2025
And even though many surgeries resulted in injury or death, reporting was unreliable, Cosgrove and colleagues pointed out in a recent review.
—Frieda Klotz, Smithsonian Magazine, 25 Apr. 2025
Any age data prior to 1400 is considered largely unreliable.
—Christopher Watson, ABC News, 21 Apr. 2025
See All Example Sentences for unreliable
Cite this Entry
“Unreliable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreliable. Accessed 3 May. 2025.
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