Hungarian word rendesen comes from Hungarian rendes, Hungarian -en-

Detailed word origin of rendesen

Dictionary entry	Language	Definition
rendes	Hungarian (hun)	(of a person) decent, good, nice, fine. Having equal and permanent status. Normal, usual. Tidy, neat.
-en-	Hungarian (hun)
rendesen	Hungarian (hun)	Really, actually. Tidily, neatly, properly. Usually, normally, as a rule, generally.

Words with the same origin as rendesen