Middle English word infaren comes from Old English faran (To go; to travel, to journey.), Old English in-

Detailed word origin of infaren

Dictionary entry	Language	Definition
faran	Old English (ang)	To go; to travel, to journey.
in-	Old English (ang)	In, into; on, upon. Internal, positioned on the inside, inside (intensifying) very.
infaran	Old English (ang)	To go in, enter.
infaren	Middle English (enm)

Words with the same origin as infaren