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

The likelihood of Libra’s adoption is even higher because the company’s fastest growth is international, and Libra is likely to be the most useful in countries where the local currency is hyperinflated or banking is unreliable. Molly Wood, WIRED, "Facebook’s Libra Cryptocurrency Betrays the Company’s True Ambitions," 26 June 2019 Ross, long so streaky as to be unreliable, came into his own as a reserve scorer for the Magic last season. Rob Mahoney, SI.com, "NBA Free Agency 2019: Top 50 Players Available," 24 June 2019 Get our daily newsletter Many existing efforts to redesign Western finance are unreliable. The Economist, "Facebook wants to create a global currency," 21 June 2019 False information abounds, and testimonies of North Korean escapees and refugees can be unreliable. Krys Lee, Dallas News, "Book peers inside the hidden life of N. Korea's Kim Jong Un," 18 June 2019 The tests performed on Theranos technology, in addition, were likely to contain inaccurate and unreliable results. CBS News, "Elizabeth Holmes' fraud trial set to start in summer 2020," 28 June 2019 Avoid gossiping during this period, as rumors may be extra unreliable due to Mercury retrograde, thanks to the full moon and eclipse energy. Sophie Saint Thomas, Allure, "How to Use This Month's Mercury Retrograde to Your Advantage," 27 June 2019 Lives and safety are at risk because of Broward’s old and unreliable emergency communications system. Larry Barszewski, sun-sentinel.com, "Safety on the line as feud again delays fixes to emergency radio system," 7 June 2019 This unreliable power supply is a major hindrance to Nigeria’s economic growth. Samuel Ayokunle Olowosejeje, Quartz Africa, "Nigeria’s unreliable electricity costs its economy $29 billion a year—solar power would save billions," 1 June 2019

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

21 Jul 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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