dipsomaniac (n.)

• addict
• alcoholic
• bacchanal
• boozer
• carouser
• drinker
• drunk
• drunkard
• fiend
• freak
• guzzler
• head
• hype
• imbiber
• inebriate
• junkie
• pothead
• reveler
• snowbird
• soaker
• sot
• tippler
• toper
• tripper
• user
• wassailer