Where does “overswarm” come from?

overswarm (English) comes from English over, from Middle English over, from Old English ōfer, from Proto-West Germanic obar, from Proto-Germanic uber, from Proto-Indo-European upér, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

overswarm (English): To swarm over; to overrun

Definitions

  1. To swarm over; to overrun

Ancestry of “overswarm”, step by step

overswarm traces back through two separate lines of ancestry.

via English over

StepLanguageWordMeaning
1EnglishoverDiscontinued; ended or concluded; Thoroughly;...
2Middle Englishoverriverbank, seashore, brink
3Old Englishōferriverbank, seashore, brink, edge, margin, border
4Proto-West Germanicobarover, above
5Proto-Germanicuberover; over, above
6Proto-Indo-Europeanupérabove; over
7Proto-Indo-Europeanupóunder, below
8Proto-Indo-Europeanh₃ewp-

via English swarm

StepLanguageWordMeaning
1EnglishswarmA large number of insects, especially when in...
2Middle EnglishswarmA swarm; A large group of people
3Old Englishswearmswarm
4Proto-Germanicswarmazswarm; dizziness
5Proto-Indo-Europeanswēr-heavy
Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Proto-Indo-European upér