mračno

1. (mračno je …) dark
   Zimi je već u pet sati mračno. — In winter it's already dark at five.
   Upali svetlo, ovde je baš mračno. — Turn on the light, it's really dark in here.
2. gloomily; darkly
   Pogledao me je mračno i ništa nije rekao. — He gave me a dark look and said nothing.
   Stručnjaci mračno gledaju na budućnost privrede. — Experts take a gloomy view of the economy's future.