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Synonyms

riotous

American  
[rahy-uh-tuhs] / ˈraɪ ə təs /

adjective

  1. (of an act) characterized by or of the nature of rioting or a disturbance of the peace.

  2. (of a person) inciting or taking part in a riot.

  3. given to or marked by unrestrained revelry; loose; wanton.

    riotous living.

  4. boisterous or uproarious.

    riotous laughter.

  5. hilariously funny.


riotous British  
/ ˈraɪətəs /

adjective

  1. proceeding from or of the nature of riots or rioting

  2. inciting to riot

  3. characterized by wanton or lascivious revelry

    riotous living

  4. characterized by boisterous or unrestrained merriment

    riotous laughter

"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

  • riotously adverb
  • riotousness noun
  • unriotous adjective
  • unriotously adverb
  • unriotousness noun

Etymology

Origin of riotous

Middle English word dating back to 1300–50; see origin at riot, -ous

Explanation

Anything riotous is disorderly, chaotic, and loud. Riotous things can also be abundant. Since a riot is a disturbance where people get out of control and become violent, riotous things are also loud, disruptive, and out of hand. If everyone in class speaks at once to answer a question, that's a riotous response. Chaos is always riotous. The opposite of riotous would be calm, civilized, and peaceful. Also, you can say that lush, abundant things are riotous. If an apple tree is producing an unusually large amount of apples, it's riotous.

Keep Reading on Vocabulary.com

Vocabulary lists containing riotous

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.

That left Derbyshire on 108-9 and a chaotic misunderstanding between Abbas and Zak Chappell resulted in the latter being run out for five to end the game and spark riotous Lancashire celebrations.

From BBC • Apr. 13, 2026

“Egg nog is kind of like me — it’s not for everyone, but the people who like it are my kind of people,” he said to riotous applause.

From Los Angeles Times • Dec. 21, 2025

But in “A Child’s Christmas in Wales,” his riotous narrative inspired by his boyhood yuletides in the 1920s, Dylan Thomas serves up a dissenting version of the holiday as a merry mess.

From The Wall Street Journal • Dec. 19, 2025

Parrish told ProPublica she had collected evidence that “shows ongoing and persistent activity” outside the facility that under statute and police directive “would be considered riotous, unlawful assembly and/or disorderly conduct.”

From Salon • Nov. 14, 2025

Other men picked up steam as the hours passed, and the aimless, riotous celebration continued.

From "Catch-22" by Joseph Heller