dipsomaniac

A dipsomaniac is a drunkard or alcoholic: someone who drinks alcohol to excess.

Since dipsomania is a word for alcoholism, it makes sense that a dipsomaniac is an alcoholic. A dipsomaniac has a physical need for alcohol that goes beyond being thirsty: it’s an addiction. The dipsa root (meaning "thirst") turns up in a few other somewhat obscure words, such as adipsia(meaning "loss of thirst") and polydipsia (meaning "excessive thirst").

Definitions of dipsomaniac
  1. noun
    a person who drinks alcohol to excess habitually
    synonyms: alcoholic, alky, boozer, lush, soaker, souse
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    type of:
    drunk, drunkard, inebriate, rummy, sot, wino
    a chronic drinker
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