1 unreasonable | Definition of unreasonable
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unreasonable

adjective
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
Other Words from unreasonable Synonyms & Antonyms More Example Sentences Learn More about unreasonable

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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

 Under the Fourth Amendment’s protection from unreasonable searches and seizures, the police generally cannot enter a person’s home without a warrant. — Michael Mccann, SI.com, "The Consequences Patrick Chung Could Face For His Felony Cocaine Charge," 22 Aug. 2019 Gun rights advocates warn red flag laws could violate the Fourth Amendment's prohibition on unreasonable searches and seizures, the 14th Amendment's due process clause and even the First Amendment. — Kathryn Watson, CBS News, "Second Amendment advocates warn Trump over support for "red flag" laws," 14 Aug. 2019

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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More Definitions for unreasonable

unreasonable

adjective
How to pronounce unreasonable (audio)

English Language Learners Definition of unreasonable

: not fair, sensible, or appropriate : not reasonable

See the full definition for unreasonable in the English Language Learners Dictionary

unreasonable

adjective
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

unreasonable

adjective
un·​rea·​son·​able

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 violated — U.S. Constitution amend. IV — see also search, seizure

Other Words from unreasonable

unreasonableness noun
unreasonably adverb

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