Norwegian Bokmål Etymology From kull + svart. Adjective kullsvart (indefinite singular kullsvart, definite singular and plural kullsvarte) coal black, jet-black, pitch-black Alternative forms kolsvart (Nynorsk also) kullsort References “kullsvart” in The Bokmål Dictionary. “kullsvart” in Det Norske Akademis ordbok (NAOB). Wikiwand - on Seamless Wikipedia browsing. On steroids.