riotous /ˈrajətəs/ adjective Learner's definition of RIOTOUS
[more riotous; most riotous] formal
1
of a group of people : behaving in a violent and uncontrolled way（人群）骚乱的，暴乱的 2
: very exciting, fun, or full of energy欢闹的；欢腾的 3
: existing or occurring in large amounts : abundant丰富的；繁茂的