IPA: /ˈraɪətəs/
KK: /ˈraɪətəs/
Characterized by wild and noisy behavior, often associated with chaos or disorder; can also refer to something abundant or lush.
The riotous celebration lasted all night, filled with laughter and music.
Riotous → It is formed from "riot" (from Old French *riote*, meaning a noisy quarrel or disturbance) and "-ous" (meaning full of). The word "riotous" means full of riot or characterized by disorderly behavior.
Think of a noisy quarrel ('riot') and remember that 'riotous' describes something full of that kind of disorderly behavior.