Malicious

1. (a.) Indulging or exercising malice; harboring ill will or enmity.

2. (a.) Proceeding from hatred or ill will; dictated by malice; as, a malicious report; malicious mischief.

3. (a.) With wicked or mischievous intentions or motives; wrongful and done intentionally without just cause or excuse; as, a malicious act.

Thesaurus Entries

acrid, antagonistic, antipathetic, baleful, baneful, belligerent, bitchy, bitter, catty, caustic, clashing, colliding, conflicting, cussed, deleterious, despiteful, detrimental, envious, evil, full of hate, green, green-eyed, harmful, hateful, hostile, iniquitous, invidious, jealous, malefic, maleficent, malevolent, malign, malignant, mean, nasty, noxious, ornery, pernicious, petty, poison-pen, poisonous, quarrelsome, rancorous, repugnant, set against, sore, spiteful, venomous, vicious, virulent, vitriolic, wicked