Ill-natured

a.
  1. Of habitual bad temper; having an unpleasant disposition; surly; disagreeable; cross; peevish; fractious; crabbed; -- of people; as, an ill-natured person; an ill-natured disagreeable old man. Opposite of good-natured.
  2. Dictated by, or indicating, ill nature; spiteful.
  3. Intractable; not yielding to culture.
  4. not to one's liking; unpleasant; disagreeable. Opposite of agreeable.