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

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 , -​ˈrē-​zᵊn-​ə-​bəl-​ How to pronounce unreasonable (audio) \ noun
unreasonably \ ˌən-​ˈrēz-​nə-​blē , -​ˈrē-​zᵊn-​ə-​blē How to pronounce unreasonable (audio) \ 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 Investigators will also look at whether the LMPD conducts unreasonable stops, searches, seizures and arrests during patrols and while obtaining search warrants (Taylor was killed after police executed a no-knock warrant). Jon Blistein, Rolling Stone, "Department of Justice to Investigate Louisville Police Over Use of Force, Discriminatory Tactics," 26 Apr. 2021 The gym appealed the fine and continued operating, calling the state’s regulations unreasonable. Jamie Goldberg, oregonlive, "Oregon has yet to collect any money from businesses fined for flouting COVID-19 safety rules," 24 Apr. 2021 But lurking behind that ideal is the need to maintain accurate voter rolls, have enough polling places so voters don’t wait an unreasonable amount of time, and ensure speed and transparency in vote tabulation. Ilya Shapiro, Washington Examiner, "The voter suppression lie," 22 Apr. 2021 Legal observers said the totality of the prosecution's testimony was insurmountable as Minneapolis police officials and policing experts denounced Chauvin's actions as excessive, unreasonable and out of policy. Tami Abdollah, USA TODAY, "Derek Chauvin's conviction is progress, but it 'will do nothing to change' urban policing on its own," 20 Apr. 2021 To convict on any of these counts, jurors must find that Chauvin used a level of force that would be considered unreasonable to an objective officer in his position. Amy Forliti, chicagotribune.com, "What are charges against Derek Chauvin in death of George Floyd?," 19 Apr. 2021 To convict on any of these counts, jurors must find that Chauvin used a level of force that would be considered unreasonable to an objective officer in his position. Amy Forliti, Star Tribune, "EXPLAINER: What are charges against Chauvin in Floyd death?," 19 Apr. 2021 Reasonable policies cannot sprout from unreasonable levels of risk tolerance. Joseph A. Ladapo, WSJ, "An American Epidemic of ‘Covid Mania’," 19 Apr. 2021 To convict on any of these counts, jurors must find that Chauvin used a level of force that would be considered unreasonable to an objective officer in his position. BostonGlobe.com, "What are the charges against Derek Chauvin in George Floyd’s death?," 19 Apr. 2021

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

Time Traveler

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

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Last Updated

28 Apr 2021

Cite this Entry

“Unreasonable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreasonable. Accessed 8 May. 2021.

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More Definitions for unreasonable



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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