Webster's Revised Unabridged Dictionary · 1913

Riotous

Riotous , adjective

[Old French rioteux.]

1.
Involving, or engaging in, riot; wanton; unrestrained; luxurious.
The younger son... took his journey into a far country, and there wasted his substance with riotous living. — Luke xv. 13
2.
Partaking of the nature of an unlawful assembly or its acts; seditious.