buxom

The story

1. Proto-West Germanic · inherited from*beuhsam
2. Old English · inherited frombōcsum
3. Middle English · inherited frombuxom
4. English todaybuxom

From Middle English buxom, also ibucsum, ibuhsum (“bendsome, flexible, pliant, obedient”), from Old English bōcsum, *būhsum, *ġebūhsum (“bendsome, pliant, obedient”), from Proto-West Germanic *beuhsam, *beugsam, equivalent to bow (“to bend, bow at the waist”) + -some or buck (“to bend, buckle, kick”) + -some. Cognate with Scots bowsome (“compliant”), West Frisian bûgsum (“flexible, bendy”), Dutch buigzaam (“flexible, pliant”), German biegsam (“flexible, pliant”).