Where does “dim” come from?

dim (Old English) comes from Old English dimm, from Proto-Germanic dimmaz, from Proto-Indo-European dʰem- — to whisk, smoke, blow; dust, haze, cloud; obscure.

Ancestry of “dim”, step by step

Step	Language	Word	Meaning
1	Old English	dimm	dim
2	Proto-Germanic	dimmaz	dark; gloomy
3	Proto-Indo-European	dʰem-	to whisk, smoke, blow; dust, haze, cloud; obscure

Words derived from “dim”

dim
dimly
dimmer
dimming
dimmest
dimwit
dimmish
bedim
dimmable
undimming
dimish
dimmeth
dimmy
dimbo
undimmable
dim
dym
Dim
dimmen
dim-headed
dimbus
dimmet
dim-lit
dimsome

Every word from Proto-Indo-European dʰem- →Every word from Proto-Germanic dimmaz →Every word from Old English dimm →