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Synonyms

reasonable

American  
[ree-zuh-nuh-buhl, reez-nuh-] / ˈri zə nə bəl, ˈriz nə- /

adjective

  1. agreeable to reason or sound judgment; logical.

    a reasonable choice for chairman.

    Synonyms:
    wise, judicious, intelligent, equitable
  2. not exceeding the limit prescribed by reason; not excessive.

    reasonable terms.

    Synonyms:
    just, fair, equitable
  3. moderate, especially in price; not expensive.

    The coat was reasonable but not cheap.

  4. endowed with reason.

  5. capable of rational behavior, decision, etc.


reasonable British  
/ ˈriːzənəbəl /

adjective

  1. showing reason or sound judgment

  2. having the ability to reason

  3. having modest or moderate expectations; not making unfair demands

  4. moderate in price; not expensive

  5. fair; average

    reasonable weather

"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

reasonable Idioms  
  1. see beyond a (reasonable) doubt.


Related Words

Reasonable, rational refer to the faculty of reasoning. Rational can refer to the reasoning faculty itself or to something derived from that faculty: rational powers; a rational analysis. It can also mean sane or sensible: She was no longer rational; a rational plan. Reasonable most often means sensible: A reasonable supposition is one which appeals to our common sense. See moderate.

Other Word Forms

Etymology

Origin of reasonable

First recorded in 1250–1300; Middle English resonable, from Middle French raisonnable, from Latin ratiōnābilis. See reason, -able

Explanation

Reasonable describes someone or something that's sensible and fair, like your teacher who gives reasonable homework assignments — they don't take you forever to do and they relate to what you are studying. If you're reasonable, you have good sense and judgment. A reasonable decision is rational and thought out, like your mom's reasonable rule about not eating crumbly foods in her car. When you describe a store's prices as reasonable, you mean they're fair — not too high. And if you are given a reasonable amount of time to do a project for school, you have no excuse for it being late.

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Vocabulary lists containing reasonable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Courts use formal standards of proof depending on the stakes, such as probable cause, preponderance of the evidence and beyond a reasonable doubt.

From Salon • May 12, 2026

“So it’s reasonable for the medical personnel to take maximal precautions so that they don’t contract it,” Iovine said.

From Los Angeles Times • May 11, 2026

In criminal law, "the burden of proof is higher," noted Brandon Garrett, a law professor at Duke University -- with prosecutors required to establish guilt beyond a reasonable doubt.

From Barron's • May 11, 2026

"We are reasonable with the genuine people really struggling."

From BBC • May 10, 2026

We continued to talk for some time; and, seeing that he was seemingly quite reasonable, she ventured, looking at me questioningly as she began, to lead him to his favourite topic.

From "Dracula" by Bram Stoker

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