black as thunder

verb

Roget 431: be black etc. adj.; render black etc. adj.. blacken, infuscate^†, denigrate; blot, blotch; smutch^†; smirch; darken etc. 421.    black, sable, swarthy, somber, dark, inky, ebony, ebon, atramentous^†, jetty; coal-black, jet-black; fuliginous^†, pitchy, sooty, swart, dusky, dingy, murky, Ethiopic; low-toned, low in tone; of the deepest dye.    black as jet etc. n., black as my hat, black as a shoe, black as a tinker's pot, black as November, black as thunder, black as midnight; nocturnal etc. (dark) 421; nigrescent^†; gray etc. 432; obscure etc. 421.    ... show more

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