The Collaborative International Dictionary of English v.0.48:
Malefic \Ma*lef"ic\, a. [L. maleficus: cf. F. mal['e]fique. See Malefaction.] Doing mischief; causing harm or evil; nefarious; hurtful. [R.] --Chaucer. [1913 Webster]WordNet (r) 3.0 (2006):
malefic adj 1: having or exerting a malignant influence; "malevolent stars"; "a malefic force" [syn: malefic, malevolent, malign, evil]