Old Norse blaðra

← Proto-Germanic *blēdrǭ (inherited)

← Proto-Indo-European *bʰleh₁- (root)

→ English bladder (mention)

→ English blather (derived)

→ Danish blære (inherited)

→ Westrobothnian blæder (inherited)

→ Westrobothnian blädär (inherited)

→ Westrobothnian blädär (inherited)

→ Old Swedish blædhra (inherited)

→ Norwegian Bokmål blemme (cognate)

→ Norwegian Nynorsk blære (inherited)

→ Norwegian Nynorsk blemme (cognate)