ma•lignPronunciation: (mu-līn'), [key]
to speak harmful untruths about; speak evil of; slander; defame: to malign an honorable man.
evil in effect; pernicious; baleful; injurious: The gloomy house had a malign influence upon her usually good mood.
having or showing an evil disposition; malevolent; malicious.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.