1. relating to or characteristic of wild, drunken celebration and revelry
Usage: often capitalized when referring to the Roman festival of Bacchus; formal or literary register

Examples

• The bacchanalian festivities lasted all night, with music and dancing in every corner.
• After winning the championship, the team threw a bacchanalian celebration at the local bar.
• The novel describes the bacchanalian excess of the Roman aristocracy.
• The bacchanalian atmosphere of the carnival drew crowds from across the region.
• He warned his children against the bacchanalian lifestyle of some college students.
• The bacchanalian revels of ancient Rome were legendary in historical accounts.