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
Most current humanoid robots require specialized inputs, such as depth sensors or motion-capture markers, but these can be unreliable or difficult to use in unpredictable settings.
—
Kaif Shaikh, Interesting Engineering, 4 Dec. 2025
Karl Marx had identified them as unreliable characters, politically and otherwise.
—Diedrich Diederichsen, Artforum, 1 Dec. 2025
However, early versions were also unreliable and required rearchitecting systems.
—Scott D. Anthony, Fortune, 29 Nov. 2025
Gardner now helps Indianapolis survive without generating takeaways, a critical, but often unreliable, source of defensive success from week to week.
—Andrew Callahan, Boston Herald, 29 Nov. 2025
See All Example Sentences for unreliable
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Kaif Shaikh, Interesting Engineering, 4 Dec. 2025
Karl Marx had identified them as unreliable characters, politically and otherwise.
—Diedrich Diederichsen, Artforum, 1 Dec. 2025
However, early versions were also unreliable and required rearchitecting systems.
—Scott D. Anthony, Fortune, 29 Nov. 2025
Gardner now helps Indianapolis survive without generating takeaways, a critical, but often unreliable, source of defensive success from week to week.
—Andrew Callahan, Boston Herald, 29 Nov. 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 5 Dec. 2025.
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