bacchanal

noun

1.
someone who engages in drinking bouts
bacchant drunken reveler drunken reveller
2.
a drunken reveller; a devotee of Bacchus
bacchant
3.
a wild gathering involving excessive drinking and promiscuity
bacchanalia debauch debauchery drunken revelry orgy riot saturnalia
Derived from:
bacchanal bacchanalian