definitions
  • synonyms

unreasonable

[ uhn-ree-zuh-nuh-buhl, -reez-nuh- ]
/ ʌnˈri zə nə bəl, -ˈriz nə- /
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adjective

not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
not in accordance with practical realities, as attitude or behavior; inappropriate: His Bohemianism was an unreasonable way of life for one so rich.
excessive, immoderate, or exorbitant; unconscionable: an unreasonable price; unreasonable demands.
not having the faculty of reason.

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RELATED WORDS

stupidly

Nearby words

unreality, unrealizable, unrealized, unreally, unreason, unreasonable, unreasonable behaviour, unreasoning, unreckonable, unrecognizable, unrecognized

Origin of unreasonable

First recorded in 1300–50, unreasonable is from the Middle English word unresonabel. See un-1, reasonable
SYNONYMS FOR unreasonable
Related formsun·rea·son·a·ble·ness, nounun·rea·son·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unreasonably

British Dictionary definitions for unreasonably

unreasonable

/ (ʌnˈriːznəbəl) /

adjective

immoderate; excessiveunreasonable demands
refusing to listen to reason
lacking reason or judgment
Derived Formsunreasonableness, noununreasonably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unreasonably

unreasonable


adj.

mid-14c., from un- (1) "not" + reasonable. Related: Unreasonably.

Online Etymology Dictionary, © 2010 Douglas Harper