un·​de·​pend·​able | \ˌən-di-ˈpen-də-bəl \

Definition of undependable 

: unable to be trusted or relied on : not dependable : unreliable an undependable source of information an undependable water supply

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Other Words from undependable

undependability \ ˌən-​di-​ˌpen-​də-​ˈbi-​lə-​tē \ noun
undependably \ ˌən-​di-​ˈpen-​də-​blē \ adverb

Examples of undependable in a Sentence

Recent Examples on the Web

Many Carefree residents who live west of Black Mountain are not serviced by the town’s water company and have complained for years about rising costs from private companies and an undependable water supply. azcentral, "Election 2018: Here's who wants to run your Valley city," 1 June 2018 The ultimate irony comes in where Pace’s decision leaves the Bears at wide receiver, needing to depend on a player whose injuries have labeled him undependable: Kevin White. David Haugh, chicagotribune.com, "For just $1 million, Ryan Pace let Cam Meredith leave Bears for nothing in return," 11 Apr. 2018 Those studies show that symptoms are an undependable marker of infectivity. Richard Klasco, M.d., New York Times, "Am I Contagious?," 2 Mar. 2018 The device was a nuisance to use, embarrassing to have parked in front of my seat in a movie theater, and infuriatingly undependable. Nyle Dimarco, Teen Vogue, "Nyle DiMarco Opens Up About Having to Leave Black Panther Because He's Deaf," 23 Feb. 2018 The wild card: Andrew Wiggins, fabulously talented but a bit flighty and undependable at times. Bruce Jenkins, San Francisco Chronicle, "The Celtics: When tributes go wrong," 20 Jan. 2018 Kentucky’s defense is so undependable that Stoops declined a third-down holding penalty with a 10-point lead and Ole Miss in field goal range. Tim Sullivan, The Courier-Journal, "Last-minute loss a reckoning for flawed Kentucky | Tim Sullivan," 5 Nov. 2017 The biggest issue is an undependable defense, though Sean Lee is an All-Pro linebacker. USA TODAY, "NFL 2017: Wide-open look in NFC, no clear favorite," 27 Aug. 2017 Their father is brilliant and dashing but undependable. Mark Kennedy, Detroit Free Press, "Review: In ‘Glass Castle,’ love triumphs over dysfunction," 10 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undependable.' 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 undependable

1860, in the meaning defined above

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The first known use of undependable was in 1860

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playful or foolish behavior

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