n. 25B6; adjective
a black horse : DARK, pitch-black, jet-black, coal-black, inky; Heraldry sable; rare nigrescent.
a black night : UNLIT, dark, starless, moonless; poetic/literary tenebrous, Stygian.
the blackest day of the war : TRAGIC, disastrous, calamitous, catastrophic, cataclysmic, fateful, wretched, woeful, awful, terrible; formal grievous.
Mary was in a black mood : MISERABLE, unhappy, sad, wretched, broken-hearted, heartbroken, grief-stricken, grieving, sorrowful, sorrowing, anguished, desolate, despairing, disconsolate, downcast, dejected, cheerless, melancholy, morose, gloomy, glum, mournful, doleful, funereal, dismal, forlorn, woeful, abject; informal blue; poetic/literary dolorous.
black humour : CYNICAL, macabre, weird, unhealthy, ghoulish, morbid, perverted, gruesome; informal sick.
a black look. : See angry sense 1.
(archaic) a black deed. : See wicked sense 1.
melan-.
white, clear, bright, joyful.
25B6; verb
the steps of the houses were neatly blacked : BLACKEN, darken; dirty, make sooty, make smoky, stain, grime, soil.
she blacked his eye : BRUISE, contuse; hit, punch, injure.
(Brit. dated) trade union members blacked the work : BOYCOTT, embargo, blacklist, proscribe.
25A0; black out FAINT, lose consciousness, pass out, swoon; informal flake out, go out.
25A0; black something out DARKEN, shade, turn off the lights in; keep the light out of.
25A0; in the black IN CREDIT, in funds, debt-free, out of debt, solvent, financially sound, able to pay one's debts, creditworthy; rare unindebted.
25A0; black and white
a black-and-white picture : MONOCHROME, greyscale.
I wish to see the proposals in black and white : IN PRINT, printed, written down, set down, on paper, recorded, on record, documented.
in black-and-white terms : CATEGORICAL, unequivocal, absolute, uncompromising, unconditional, unqualified, unambiguous, clear, clear-cut.