adusk /əˈdʌsk/adjective 1adverb 1forms 2 adjective1 •(rare) Resembling conditions at dusk or twilight, low-lit, dark; in darkness, gloomy.You wish to die and leave the world adusk For others, with your naughty light blown out? — 1856 adverb1 •(rare) At dusk; in the dusk or twilight. formsmore adusk · most adusk