Proto-Germanic *swarmaz

→ English swarm (inherited)

→ Old English swearm (inherited)

→ Danish sværm (derived)

→ German Schwarm (inherited)

→ Middle English swarm (inherited)

→ Old Swedish sværmber (inherited)

→ Luxembourgish Schwaarm (inherited)

→ Dutch zwerm (inherited)

→ Old Norse svarmr (inherited)

→ Saterland Frisian Swoorm (inherited)

→ Swedish svärm (inherited)