RIOT Copy link • RIOT 1. s. Revelry, comissatio; bacchanalia, plur. (drunken feasts): bacchatio. Tumult, uproar, tumultus: seditio: turbae, plur., SYN. and PHR. in COMMOTION. 2. v. To revel, comissari: bacchari: debacchari. To be in a state of uproar, tumultuari; tumultus movere; tumultum facere or praebere.