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logical

American  
[loj-i-kuhl] / ˈlɒdʒ ɪ kəl /

adjective

  1. according to or agreeing with the principles of logic.

    a logical inference.
    Synonyms:
    valid
    Antonyms:
    unreasonable

  2. reasoning in accordance with the principles of logic, as a person or the mind.

    logical thinking.
    Antonyms:
    unreasonable

  3. reasonable; to be expected.

    War was the logical consequence of such threats.
    Synonyms:
    valid
    Antonyms:
    unreasonable

  4. of or relating to logic.

logical British  
/ ˈlɒdʒɪkəl /

adjective

  1. relating to, used in, or characteristic of logic

  2. using, according to, or deduced from the principles of logic

    a logical conclusion

  3. capable of or characterized by clear or valid reasoning

  4. reasonable or necessary because of facts, events, etc

    the logical candidate

  5. computing of, performed by, used in, or relating to the logic circuits in a computer

"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

Other Word Forms

Etymology

Origin of logical

From the Medieval Latin word logicālis, dating back to 1490–1500; see logic, -al 1

Explanation

Logical describes something that comes from clear reasoning. Using a fire extinguisher to put it out a fire is a logical step. Trying to put it out with gasoline is not. The adjective logical is rooted in the Greek word logos, which means "reason, idea, or word." So calling something logical means it's based on reason and sound ideas — in other words, thought out with mathematical precision and removed from emotion. Sounds strict and boring, but it's the orderliness and consistency of logic that helps you write a great argument or figure out how to solve a problem.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.