See also darkness.denigration literally, blackening; commonly, the sullying or defaming of a person, organization, or institution. —denigrator, n. melanism a darkening caused by an unusually high amount of pigmentation in the skin, hair, and eyes. melanosis abnormal production and presence of melanin, a black pigment, in the body tissues. —melanotic, adj. melanosity darkness or blackness of eyes, hair, or complexion. nigrescence the process of becoming black; blackness, as of the skin. —nigrescent, adj. nigritude the condition of being black; blackness. phaeism an intermediate darkening of the skin, hair, and eyes, of insufficient degree to be called melanism.