1. One who riots; a reveler; a roisterer. Chaucer.

2. (Law)

Defn: One who engages in a riot. See Riot, n., 3.

RIOTISE
Ri"ot*ise, n.

Defn: Excess; tumult; revelry. [Obs.]
His life he led in lawless riotise. Spenser.

RIOTOUR
Ri"ot*our (-oor), n.

Defn: A rioter. [Obs.] Chaucer.

RIOTOUS
Ri"ot*ous, a. Etym: [OF. 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.
— Ri"ot*ous*ly, adv.
— Ri"ot*ous*ness, n.