köken: Inherited from Old French sombre, likely from Latin sub umbra (“in/under the shade”); compare Spanish and Portuguese sombra (“shade, shadow”). Possibly derived through a verb *sombrer, from a Vulgar Latin *subumbrāre (“to shade, enshadow”), though this does not seem necessary. Compare also Old French essombre, with a different prefix.
köken: From Proto-Finnic *hämärä, derived from a root hämä-, which may be possibly borrowed from Proto-Germanic [Term?] (compare Icelandic sámur). Related to Estonian hämar, Karelian hämärä, Livonian ämār, Veps hämär and Votic hämäre.