dipsomaniac

a person who makes a habit of getting drunk few suspected that this pillar of the community, ensconced in her suburban colonial, was a closet dipsomaniac Synonyms alcoholic, alkie (or alky) [slang], boozehound, boozer, drunk, drinker, drunkard, inebriate, juicehead [slang], juicer [slang], lush, rummy, soak, soaker, sot, souse, tippler, toper, tosspotRelated Words swigger, swiller; winoNear Antonyms abstainer, nondrinker, teetotaler (or teetotaller), teetotalist