Malicious /(?)/

Ma·li·cious

Malicious

a.
  1. Indulging or exercising malice; harboring ill will or enmity.
    I grant him bloody, . . . Sudden, malicious, smacking of every sin That has a name.
  2. Proceeding from hatred or ill will; dictated by malice; as, a malicious report; malicious mischief.
  3. With wicked or mischievous intentions or motives; wrongful and done intentionally without just cause or excuse; as, a malicious act. (Law)

Phrases & Compounds
Malicious abandonment
the desertion of a wife or husband without just cause.
Malicious prosecution
a wanton prosecution or arrest, by regular process in a civil or criminal proceeding, without probable cause.