[Hence,] يَوْمٌ عَبُوسٌ (assumed tropical:) A distressful, an afflictive, or a calamitous, day; (S, Msb, TA;) as also يَوْمٌ↓عَابِسٌ: (TA:) or a hateful day, on account of which faces frown, or contract themselves, &c.: (O, K:) or a day in which one frowns, or contracts his face, &c. (TA.)