Where does “worm-ridden” come from?

worm-ridden (English) comes from English Worm, from Middle English worm, from Old English wyrm, from Old English lēah, from Proto-West Germanic lauh, from Proto-Germanic lauhaz, from Proto-Indo-European lówkos, from Proto-Indo-European lewḱ- — bright; to shine; to see.

Ancestry of “worm-ridden”, step by step

worm-ridden traces back through two separate lines of ancestry.

via English Worm

StepLanguageWordMeaning
1EnglishWormA generally tubular invertebrate of the annelid phylum; an earthworm
2Middle EnglishwormA worm or similar small wormlike animal that...
3Old Englishwyrmcreeping insect; maggot, grub, worm; snake,...
4Old Englishlēahmeadow; clearing with a pigsty; woodland,...
5Proto-West Germaniclauhclearing; meadow
6Proto-Germaniclauhazclearing; meadow
7Proto-Indo-Europeanlówkosclearing; open space, clearing; field, meadow
8Proto-Indo-Europeanlewḱ-lynx
9Proto-Indo-Europeanlewk-bright; to shine; to see

via English ridden

StepLanguageWordMeaning
1Englishriddenpast participle of ride; Full of; Oppressed,...
2EnglishrideTo transport oneself by sitting on and directing...
3Middle EnglishridenTo ride on a mount; to move on an animal; To use...
4Old Englishrīdanto ride
5Proto-West Germanicrīdanto ride
6Proto-Germanicrīdanąto ride
7Proto-Indo-Europeanrēydʰ-
8Proto-Indo-Europeanh₂er-to fit, to fix, to put together
Every word from Proto-Indo-European lewk-Every word from Proto-Indo-European lewḱ-Every word from Proto-Indo-European lówkos