The Collaborative International Dictionary of English v.0.48:

Maledicent \Mal`e*di"cent\, a. [L. maledicens, p. pr. of
   maledicere to speak ill; male ill + dicere to say, speak. See
   Malice, and Diction.]
   Speaking reproachfully; slanderous. [Obs.] --Sir E. Sandys.
   [1913 Webster]