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

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 It’s not just those in the trenches who deal with pressure, last-minute requests, fire drills and unreasonable expectations. Jordan Mcquown, Forbes, 19 May 2022 Enough health-care workers—nurses, in particular—have quit their jobs that even when hospitals aren’t deluged, the remaining workforce must care for an unreasonable number of patients over longer hours and more shifts. Ed Yong, The Atlantic, 18 May 2022 The dynamics around supply and demand, competition among players, and the profits or losses that follow will soon fix any unreasonable distortions in the business, leading to a more balanced situation. Patrick Brzeski, The Hollywood Reporter, 18 May 2022 Before the new process for separation came into effect, an individual had to accuse a spouse of desertion, adultery, or unreasonable behavior to be able to petition for a divorce. Erika Page, The Christian Science Monitor, 16 May 2022 The lawsuit accused the officer of using unnecessary, unjustified, excessive force, and of violating Ingram's right to be free of unlawful and unreasonable seizure as protected under the Constitution. Emma Tucker, CNN, 15 May 2022 Therefore, trying to comply with the law and quickly amend CC&Rs to remove unreasonable rental provisions was also difficult and an unknown number of HOAs pursued fruitless attempts to pass CC&R amendments in 2021. Kelly G. Richardson, San Diego Union-Tribune, 14 May 2022 Chris Hegemann of Falls Church often feels unreasonable antipathy while playing Yahtzee. Washington Post, 8 May 2022 Then, in July 2020, a federal judge ruled FDA had to allow the drugs to be mailed after a telehealth visit because during the pandemic an in-person requirement was an unreasonable barrier. Elizabeth Weise, USA TODAY, 7 May 2022 See More

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.

First Known Use of unreasonable

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

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

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Last Updated

22 May 2022

Cite this Entry

“Unreasonable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreasonable. Accessed 28 May. 2022.

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More Definitions for unreasonable


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

More from Merriam-Webster on unreasonable

Nglish: Translation of unreasonable for Spanish Speakers

Britannica English: Translation of unreasonable for Arabic Speakers


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