Drinker

wiktionary

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From Middle English drinkere, drynkere, from Old English drincere(“drinker”), from Proto-Germanic *drinkārijaz(“drinker”), equivalent to drink +‎ -er. Cognate with Saterland Frisian Drinker(“drinker”), West Frisian drinker(“drinker”), Dutch drinker(“drinker”), German Low German Drinker(“drinker”), German Trinker(“drinker”), Danish drikker(“drinker”), Swedish drickare, drinkare(“drinker”).

etymonline

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drinker (n.)

Old English drincere, "one who drinks," agent noun from drink (v.). Specifically of habitual consumers of alcoholic beverages from c. 1200.