causing or worthy of ridicule or derision; absurd; preposterous; laughable: a ridiculous plan.
Slang. absurdly or unbelievably good, bad, crazy, etc.: The concert was ridiculous, their best performance ever!

Origin of ridiculous

1540–50; < Late Latin rīdiculōsus laughable, droll, and Latin rīdiculus (adj. derivative of rīdiculum ridicule); see -ous
Related formsri·dic·u·lous·ly, adverbri·dic·u·lous·ness, ri·dic·u·los·i·ty [ri-dik-yuh-los-i-tee] /rɪˌdɪk yəˈlɒs ɪ ti/, nounhy·per·ri·dic·u·lous, adjectivehy·per·ri·dic·u·lous·ly, adverbhy·per·ri·dic·u·lous·ness, nounqua·si-ri·dic·u·lous, adjectivequa·si-ri·dic·u·lous·ly, adverbun·ri·dic·u·lous, adjectiveun·ri·dic·u·lous·ly, adverbun·ri·dic·u·lous·ness, noun

Synonyms for ridiculous

Synonym study

1. See absurd.

Antonyms for ridiculous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ridiculous

Contemporary Examples of ridiculous

Historical Examples of ridiculous

  • It got us into a great many difficulties, some of which were ridiculous, but it had its advantages.

    The Trail Book

    Mary Austin

  • Where in the world had she ever found so ridiculous an idea as to think that Agnes would be angry with her!

    The Dream

    Emile Zola

  • It was ridiculous, the amount of time she gave to that baby—out of all rhyme and reason.


    Mr. and Mrs. Haldeman-Julius

  • I thought her ridiculous, but it was too much trouble to tell her so continually.

  • How ridiculous it was of women to sit at meals with hats on!

    The Foolish Lovers

    St. John G. Ervine

British Dictionary definitions for ridiculous



worthy of or exciting ridicule; absurd, preposterous, laughable, or contemptible
Derived Formsridiculously, adverbridiculousness, noun

Word Origin for ridiculous

C16: from Latin rīdiculōsus, from rīdēre to laugh
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 ridiculous

1540s, ridyculouse, from Latin ridiculosus "laughable," from ridiculus "that which excites laughter," from ridere "to laugh." Shakespeare and other 17c. writers sometimes spelled it rediculous. Slang extensions to "outrageous" (1839); "excellent" (1959, jazz slang). Related: Ridiculously; ridiculousness.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with ridiculous


see from the ridiculous to the sublime.

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