Where does “swarm” come from?

swarm (Old Dutch) comes from Proto-Germanic swarmaz, from Proto-Indo-European swēr- — heavy.

Ancestry of “swarm”, step by step

StepLanguageWordMeaning
1Proto-Germanicswarmazswarm; dizziness
2Proto-Indo-Europeanswēr-heavy

Words derived from “swarm”

Every word from Proto-Indo-European swēr- →Every word from Proto-Germanic swarmaz →
swarm — Etymology, Origin & Word History | Etymology Explorer