early 15c., "to soak, steep;" mid-15c., "to stain, soil," from Old French embruer "to moisten," which probably is a metathesis of embevrer "give to drink, make drunk," from em- (see em-) + -bevrer, ultimately from Latin bibere "to drink" (from PIE root *po(i)- "to drink"). Or perhaps from Old French embroue "soiled," ultimately from boue "mud, dirt."
imbecility
imbibe
imbricate
imbrication
imbroglio
imbrue
imbue
imburse
imitable
imitate
imitation