(n.) One who carouses; a reveler.

LSD user acidhead addict alcoholic addict alternating personality antisocial personality ardent bacchanal bacchanalian barfly bibber big drunk boozer carouser chain smoker chronic alcoholic chronic drunk cocaine sniffer cokie cubehead devotee of Bacchus dipsomaniac disordered personality disturbed personality dope fiend doper double personality drinker drug abuser drug addict drug user drunk drunkard dual personality emotionally unstable personality escapist fiend freak glue sniffer guzzler habitual hard hard drinker head heavy drinker heavy smoker hophead hostile personality hype hypochondriac hypochondriast idiot imaginary invalid imbiber immature personality inadequate personality inebriate inebriating inferior personality intoxicating junkie lovepot lush malade imaginaire maladjusted personality marijuana smoker mentally defective personality methhead moral insanity multiple personality narcotics addict neuropath neurotic neurotic personality oenophilist paranoid personality pathological drinker perverse personality pillhead pot companion pothead problem drinker psychoneurotic psychopath psychopathic personality psychotic psychotic personality reveler rummy schizoid schizoid personality seclusive personality serious drinker sexual psychopath shikker shut-in personality snowbird soak soaker social drinker sociopath sot speed freak spirituous split personality stew strong swigger swiller thirsty soul tippler toper tosspot tripper user valetudinarian valetudinary vinous wassailer weak personality winebibber wino winy with a kick