Proto-Germanic *flunþrijǭ

→ English flounder (derived)

→ Danish flynder (derived)

→ German Flunder (derived)

→ Middle English flowndre (derived)

→ Icelandic flundra (inherited)

→ Norwegian Bokmål flyndre (derived)

→ Norwegian Nynorsk flyndre (inherited)

→ Swedish flundra (inherited)