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
Attempts to combine these capabilities often resulted in conflicting signals and unreliable performance.
—
Mrigakshi Dixit, Interesting Engineering, 30 Sep. 2025
Much of the country relies on petrol generators because the grid is patchy and unreliable, but unsubsidized fuel is too expensive for most.
—semafor.com, 30 Sep. 2025
Wall Street is uneasy, with UBS’s Paul Donovan warning the lack of official data could let rumor and unreliable surveys sway markets, while companies quietly push through price hikes.
—Eleanor Pringle, Fortune, 30 Sep. 2025
In law, the tactic of claiming an accuser is unreliable or untrustworthy is known as impeaching the witness.
—Michael McCann, Sportico.com, 30 Sep. 2025
See All Example Sentences for unreliable
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Mrigakshi Dixit, Interesting Engineering, 30 Sep. 2025
Much of the country relies on petrol generators because the grid is patchy and unreliable, but unsubsidized fuel is too expensive for most.
—semafor.com, 30 Sep. 2025
Wall Street is uneasy, with UBS’s Paul Donovan warning the lack of official data could let rumor and unreliable surveys sway markets, while companies quietly push through price hikes.
—Eleanor Pringle, Fortune, 30 Sep. 2025
In law, the tactic of claiming an accuser is unreliable or untrustworthy is known as impeaching the witness.
—Michael McCann, Sportico.com, 30 Sep. 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 4 Oct. 2025.
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