1) Black 2) Char 3) Color 4) Colour 5) Darken 6) Defame 7) Denigrate 8) Discolor 9) Discolour 10) Make or become black 11) Melanise 12) Melanize 13) Nigrify 14) To become black 15) To defame or sully 16) To make black 17) To make dirty 18) To speak evil of 1) Char 2) Defame 3) Nigrify 4) Saute 5) Sear 6) Singe 7) Swinge 8) Tar 
• (v. t.) To make or render black. • (v. i.) To grow black or dark. • (v. t.) To make dark; to darken; to cloud. • (v. t.) To defame; to sully, as reputation; to make infamous; as, vice blackens the character.
Black'en intransitive verb To grow black or dark. Black'en transitive verb [ imperfect & past participle Blackened ; present participle & verbal noun Blackening .] [ See Black , adjective , and confer Black , transitive verb...
[v] - make or become black
melanize verb make or become black; `The smoke blackened the ceiling`; `The ceiling blackened`
to make black; darken. · to speak evil of; defame: to blacken a person's reputation.