1 synonym for Düster

threatening, menacing, foreboding, sinister, alarming, portentous, inauspicious, unpropitious, baleful, dire, gloomy, grim, haunting, ill-boding, ill-omened, dark, fateful, dismal, malefic, maleficent, minatory, warning, premonitory, forbidding, shadowy, black, unlucky, unpromising, unfavorable, evil, doomful, direful, ill-fated, ill-starred, unlucky-looking, unhopeful, unpropitious-looking, unpropitious-seeming, unpropitious-appearing [x]