(a.) Wishing evil; wishing harm to others; malicious\.

acrid antagonistic antipathetic bad baleful baneful belligerent bitchy bitter black caustic clashing colliding conflicting corroding corrosive corrupting corruptive counterproductive criminal damaging deadly deleterious despiteful detrimental disadvantageous disserviceable distressing evil evil-disposed full of hate harmful hateful hostile hurtful ill ill-affected ill-conditioned ill-disposed ill-intentioned ill-natured improper inaccurate inauspicious inexpedient inferior injurious invalid lethal malefic maleficent malicious malign malignant mischievous noisome noxious ominous peccant pernicious poisonous prejudicial quarrelsome rancorous repugnant scatheful set against sinful sinister sore spiteful toxic unfavorable unhealthy unkind unpleasant unskillful untoward venenate veneniferous venenous venomous vicious virulent vitriolic wicked wrong