Middle English word buggen comes from Proto-Indo-European *bʰewgʰ-, and later Old English bycgan (To buy.)

Detailed word origin of buggen

Dictionary entry	Language	Definition
*bʰewgʰ-	Proto-Indo-European (ine-pro)
*bugjaną	Proto-Germanic (gem-pro)	To accept. To deal; do business; exchange. To purchase; buy.
bycgan	Old English (ang)	To buy.
bycġan	Old English (ang)
byen	Middle English (enm)

Words with the same origin as buggen