Drunken

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Old English, archaic past participle of drink.

wiktionary

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From Middle English drunken, ydronken, idrunken, from Old English druncen, ġedruncen(“drunk; drunken”), from Proto-Germanic *drunkanaz(“drunken”), past participle of Proto-Germanic *drinkaną(“to drink”), equivalent to drink +‎ -en. Cognate with West Frisian dronken(“drunk; drunken”), Dutch dronken(“drunk; drunken”), German betrunken(“drunk; drunken”), Swedish drucken(“drunk; drunken”).

From Middle English dronknen, drunkenen, drunknen, from Old English druncnian(“to drown; get drunk”), from Proto-Germanic *drunkanōną(“to get drunk”), from Proto-Germanic *drunkanaz(“drunk; intoxicated”). Cognate with Norwegian drukne, drukna, Icelandic drukna.

etymonline

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drunken (adj.)

full form of the past participle of drink. Now chiefly as an adjective, "inebriated;" that sense was in Old English druncena. The meaning "habitually intoxicated" is by 1540s. Also, of things, "soaked, saturated" (early 15c.). Figurative sense of "acting as if drunk, uneven, unsteady" is by 1786. Related: Drunkenly. In the sense "addicted to drink, habitually inebriated" Middle English also had drunc-wile (c. 1200); drunkensom (mid-13c.).