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
Such an interview, legal experts said, would be impossible without Chinese interference, and Fang would be considered an unreliable witness.
—
Perry Stein The Washington Post, Arkansas Online, 29 Mar. 2026
In these scenarios, traditional sensors like cameras and lidar often become unreliable.
—Nitin Sanket, The Conversation, 27 Mar. 2026
Now there are none, their place having been taken by some two dozen littoral combat ships, which have proved mechanically unreliable, underequipped for high-threat environments, and unsuited for key missions.
—Eliot A. Cohen, The Atlantic, 25 Mar. 2026
Justin Wrobleski — Can give them some length out of the bullpen, plus can step into the rotation if Sasaki or Sheehan prove too unreliable before Snell returns.
—Assistant Sports Editor, Los Angeles Times, 24 Mar. 2026
See All Example Sentences for unreliable
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Perry Stein The Washington Post, Arkansas Online, 29 Mar. 2026
In these scenarios, traditional sensors like cameras and lidar often become unreliable.
—Nitin Sanket, The Conversation, 27 Mar. 2026
Now there are none, their place having been taken by some two dozen littoral combat ships, which have proved mechanically unreliable, underequipped for high-threat environments, and unsuited for key missions.
—Eliot A. Cohen, The Atlantic, 25 Mar. 2026
Justin Wrobleski — Can give them some length out of the bullpen, plus can step into the rotation if Sasaki or Sheehan prove too unreliable before Snell returns.
—Assistant Sports Editor, Los Angeles Times, 24 Mar. 2026
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 Apr. 2026.
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