←
Proto-Germanic *balluz (inherited)
←
Proto-Indo-European *bʰel- (root)
←
Proto-Indo-European *bʰoln- (inherited)
←
Proto-Indo-European *bʰel- (mention)
←
Old Norse bǫllr (inherited)
→
Plautdietsch Baul (cognate)
→
Swedish balle (doublet)
→
Swedish bulle (doublet)