The Swedish term "dunkel, trist, kuslig" matches the English term "gloomy"

other swedish words that include "trist" : english :
hemsk, ödslig, trist, dyster dreary
trist person sad person
other swedish words that include "kuslig" : english :
kuslig, sorglig, ruskig dismal
spöklik, kuslig, rädd eery
mystisk, kuslig uncanny