un·​rea·​son·​able | \ ˌən-ˈrēz-nə-bəl How to pronounce unreasonable (audio) , -ˈrē-zᵊn-ə-bəl \

Definition of unreasonable

1a : not governed by or acting according to reason unreasonable people
b : not conformable to reason : absurd unreasonable beliefs
2 : exceeding the bounds of reason or moderation working under unreasonable pressure

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Other Words from unreasonable

unreasonableness \ ˌən-​ˈrēz-​nə-​bəl-​nəs How to pronounce unreasonableness (audio) , -​ˈrē-​zᵊn-​ə-​bəl-​ \ noun
unreasonably \ ˌən-​ˈrēz-​nə-​blē How to pronounce unreasonably (audio) , -​ˈrē-​zᵊn-​ə-​blē \ adverb

Examples of unreasonable in a Sentence

I told him that I wouldn't pay unless he sent me a replacement. Am I being unreasonable? You are entitled to compensation for unreasonable delays.
Recent Examples on the Web The fund was originally set at $50 million and rose to $117.5 million last April after Northern District of California judge Lucy Koh called the original number unreasonable and unfair. Lily Hay Newman, Wired, "How to Get Your Yahoo Breach Settlement Money," 8 Feb. 2020 There are so many reasonable questions to ask after this failure, but a number of media observers have chosen instead to raise unreasonable ones. James Freeman, WSJ, "Iowa Voters Younger, More Diverse Than Leading Democratic Candidates," 4 Feb. 2020 The Republicans in Congress, long classed as unreasonable radicals, finally seem like moral heroes. Adam Gopnik, The New Yorker, "Did Lincoln Really Matter?," 3 Feb. 2020 That was certainly true for Christine Kraft, a medical billing expert who helps protect patients from unreasonable medical bills. Megan Cerullo, CBS News, "Can't afford your medical bill? Here's what you can do," 31 Jan. 2020 Bernie Sanders hit back at Joe Biden after the former vice president suggested the Vermont senator's plan to address climate change was unreasonable. Emily Larsen, Washington Examiner, "Bernie Sanders defends climate plan against Biden 'impossible' swipe," 24 Jan. 2020 Seven of the last 10 Devils-Rangers games have been decided by two or more goals, so the puck line isn’t unreasonable. Geoff Clark, USA TODAY Sportsbook Wire, "New Jersey Devils at New York Rangers odds, picks and best bets," 9 Jan. 2020 In March Lawler said that Nimityongskul had spent more than $300,000 during the dispute and the city likely had spent over half a million -- an estimate that one attorney for the city said wasn’t unreasonable. Lawrence Specker | Lspecker@al.com, al.com, "Judge upholds Mobile’s effort to block Buddhist center," 4 June 2019 All of this pushed the SX model, which starts at $44,585, up to a not-unreasonable $47,590. Daniel Pund, Car and Driver, "Our 2020 Kia Telluride Is Proving to Be Frustratingly Sturdy," 13 Jan. 2020

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

14th century, in the meaning defined at sense 1a

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Time Traveler for unreasonable

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The first known use of unreasonable was in the 14th century

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Last Updated

13 Feb 2020

Cite this Entry

“Unreasonable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreasonable. Accessed 25 Feb. 2020.

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More Definitions for unreasonable


How to pronounce unreasonable (audio)

English Language Learners Definition of unreasonable

: not fair, sensible, or appropriate : not reasonable


un·​rea·​son·​able | \ ˌən-ˈrē-zᵊn-ə-bəl How to pronounce unreasonable (audio) \

Kids Definition of unreasonable

: not fair, sensible, appropriate, or moderate an unreasonable schedule unreasonable behavior an unreasonable fear

Other Words from unreasonable

unreasonably \ -​blē \ adverb



Legal Definition of unreasonable

: not reasonable : beyond what can be accepted: as
a : clearly inappropriate, excessive, or harmful in degree or kind an unreasonable delay an unreasonable restraint of trade
b : lacking justification in fact or circumstance an unreasonable inference especially : irrational sense b the agency decision was unreasonable
c : not supported by a warrant or by a valid exception to a warrant requirement (as when there is reasonable suspicion) and therefore unconstitutional the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violatedU.S. Constitution amend. IV — see also search, seizure

Other Words from unreasonable

unreasonableness noun
unreasonably adverb

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