From WordNet (r) 3.0 (2006) [wn]:
nigrify
v 1: make or become black; "The smoke blackened the ceiling";
"The ceiling blackened" [syn: blacken, melanize,
melanise, nigrify, black] [ant: white, whiten]
From WordNet (r) 3.0 (2006) [wn]:
nigrify
v 1: make or become black; "The smoke blackened the ceiling";
"The ceiling blackened" [syn: blacken, melanize,
melanise, nigrify, black] [ant: white, whiten]