Bacchanalian /ˌbækəˈneɪli.ən/adjective 2noun 1forms 2 adjective2 •Of or pertaining to the festival of Bacchus, relating to or given to reveling and drunkenness.Even Bacchanalian madness has its charms. — 1782 •Of or resembling wild or unrestrained revelry.The dancing and shouting of the children around the fire had become even more bacchanalian. — 1949 noun1 •A bacchanal; a drunken reveler.With the help of a sleepy waiter, Little Billee got the bacchanalian into his room and lit his candle for him, and, disengaging himself from his maudlin embraces, left him to wallow in solitude. — 1894 formsBacchanalians · bacchanalians