Where does “dull” come from?
dull (Middle English) comes from Old English dol, from Proto-West Germanic *dol, from Proto-Germanic dulaz, from Proto-Germanic dwalaz, from Proto-Indo-European dʰwel-.
dull (Middle English) comes from Old English dol, from Proto-West Germanic *dol, from Proto-Germanic dulaz, from Proto-Germanic dwalaz, from Proto-Indo-European dʰwel-.