Hungarian word ittas comes from Hungarian iszik, Hungarian -as-

Detailed word origin of ittas

Dictionary entry	Language	Definition
iszik	Hungarian (hun)	(intransitive) to drink (to consume alcoholic beverages). (transitive, intransitive) to drink (to consume through the mouth).
-as-	Hungarian (hun)
ittas	Hungarian (hun)	Drunk, tipsy, intoxicated.

Words with the same origin as ittas