Etymology
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riotous (adj.)

mid-14c., "troublesome;" late 14c., of persons, conduct, "wanton, dissolute, extravagant," from Old French riotos "argumentative, quarrelsome," from riote "dispute, quarrel, domestic strife" (see riot (n.)). The meaning "tumultuous, turbulent, of the nature of an unlawful assembly" is from mid-15c. Related: Riotously; riotousness.

updated on August 28, 2021

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Definitions of riotous from WordNet

riotous (adj.)
produced or growing in extreme abundance;
their riotous blooming
Synonyms: exuberant / lush / luxuriant / profuse
riotous (adj.)
characterized by unrest or disorder or insubordination;
riotous times
riotous (adj.)
unrestrained by convention or morality;
riotous living
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.