What does "vicious" mean?

Vicious: Addicted to vice; corrupt in principles or conduct; depraved; wicked; as, vicious children; vicious examples; vicious conduct. Who . . . heard this heavy curse, Servant of servants, on his vicious race. Milton.

Additional senses

  1. 2.Wanting purity; foul; bad; noxious; as, vicious air, water, etc. Dryden.
  2. 3.Not correct or pure; corrupt; as, vicious language; vicious idioms.
  3. 4.Not well tamed or broken; given to bad tricks; unruly; refractory; as, a vicious horse.
  4. 5.Bitter; spiteful; malignant. [Colloq.] -- Vi"cious*ly, adv. -- Vi"cious*ness, n.

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