Middle English word aboute comes from Old English an- (One, uni-, only. Sole, single, solitary; alone.), Old English butan (Except for, but, unless Without, except.), Old English būtan

Detailed word origin of aboute

Dictionary entry	Language	Definition
an-	Old English (ang)	One, uni-, only. Sole, single, solitary; alone.
butan	Old English (ang)	Except for, but, unless Without, except.
būtan	Old English (ang)
onbūtan	Old English (ang)
onbutan	Old English (ang)	On, about, round about, on the outside.
abouten	Middle English (enm)

Words with the same origin as aboute