Middle English word grope comes from Proto-Indo-European *gʰreb-

Detailed word origin of grope

Dictionary entry	Language	Definition
*gʰreb-	Proto-Indo-European (ine-pro)	to dig, scrape, bury
*grōpō	Proto-Germanic (gem-pro)
grōp	Old English (ang)
groupe	Middle English (enm)

Words with the same origin as grope