nigrify

nigrify

(ˈnɪɡrɪˌfaɪ) vb (tr) , -fies, -fying or -fiedto blacken

Thesaurus

Verb	1.nigrify - make or become black; "The smoke blackened the ceiling"; "The ceiling blackened"black, blacken, melanise, melanizediscolour, discolor, color, colour - change color, often in an undesired manner; "The shirts discolored"