unreliable

adjective
un·​re·​li·​able | \ ˌən-ri-ˈlī-ə-bəl How to pronounce unreliable (audio) \

Definition of unreliable

: not reliable : undependable, untrustworthy an unreliable friend an unreliable source of funding an unreliable car

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Other Words from unreliable

unreliability \ ˌən-​ri-​ˌlī-​ə-​ˈbi-​lə-​tē How to pronounce unreliability (audio) \ noun
the unreliability of the data a person with a reputation for unreliability
unreliably \ ˌən-​ri-​ˈlī-​ə-​blē How to pronounce unreliably (audio) \ adverb
a method that works unreliably

Examples of unreliable in a Sentence

Recent Examples on the Web

What’s more, Beijing is sure to use the U.S. decision on Syria to underscore to American allies in Asia that Washington is an unreliable partner. Michael Singh, WSJ, "Beijing’s Curious Silence on the Syria Withdrawal," 8 Jan. 2019 Laying the groundwork for U.S. diplomacy also might assuage concerns in Asia that the United States is an unreliable partner. Bridget Coggins, Washington Post, "North and South Korea still have a long path ahead, most of it uncharted," 1 May 2018 Some alternative health providers may suggest a notoriously unreliable test to look at the level of indigestible sugars (lactulose and mannitol) in your urine. Sarah Jacoby, SELF, "Leaky Gut Syndrome Isn’t an Official Diagnosis, but the Symptoms Are Real," 19 Mar. 2019 Awkward loops and unreliable magnetic connections are no match for the jumble of the everyday backpack or bag. Melissa Riofrio, PCWorld, "Dell's Inspiron 7000 2-in-1 Black Edition laptops save you from lost pens and hot panels," 8 Jan. 2019 We were freed from using the geriatric, unreliable oven that came with our apartment, and cookies, pizzas, and baked chicken dishes were now heated all the way through. Megan Geuss, Ars Technica, "Review: The June oven made me want a camera in every cooking device," 22 Dec. 2018 According to a 2011 study by the Justice Department, 94 to 98 percent of burglar alarms were false, making the systems unreliable. Paul Sullivan, New York Times, "Can Artificial Intelligence Keep Your Home Secure?," 29 June 2018 And is Taylor taking advantage of a program by basing his identity on DNA results that some experts consider unreliable? Christine Willmsen, The Seattle Times, "Lynnwood man tried to use a home DNA test to qualify as a minority business owner. He was denied — now he’s suing.," 13 Sep. 2018 Very unreliable, plays outside the scheme, not reliable in coverage, his eyes are all over the place. Albert Breer, SI.com, "How a Soldier’s Story Helped Dan Quinn Build the Falcons," 2 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unreliable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unreliable

1810, in the meaning defined above

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Statistics for unreliable

Last Updated

14 Apr 2019

Look-up Popularity

Time Traveler for unreliable

The first known use of unreliable was in 1810

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More Definitions for unreliable

unreliable

adjective

English Language Learners Definition of unreliable

: not able to be trusted to do or provide what is needed or promised
: not believable or trustworthy

unreliable

adjective
un·​re·​li·​able | \ ˌən-ri-ˈlī-ə-bəl\

Kids Definition of unreliable

: not worthy of trust He got rid of his unreliable car.

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More from Merriam-Webster on unreliable

Spanish Central: Translation of unreliable

Nglish: Translation of unreliable for Spanish Speakers

Britannica English: Translation of unreliable for Arabic Speakers

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