Middle English word besinken comes from Old English butan (Except for, but, unless Without, except.), Old English sincan (To sink.)

Detailed word origin of besinken

Dictionary entry	Language	Definition
butan	Old English (ang)	Except for, but, unless Without, except.
sincan	Old English (ang)	To sink.
besincan	Old English (ang)	To sink, submerge.
besinken	Middle English (enm)

Words with the same origin as besinken