blackening

Noun

 * 1)  The act or process of turning (becoming)  in colour.
 * 2)  The result or an instance of such an act or process; a black  or.
 * 3) Any of various (dark-colored) surface treatments for metal substrates, to inhibit corrosion; on steel, generally,.
 * 4) The act of defaming or sullying.
 * blackenings of my reputation