D defs.my
Entry 6 senses Webster, 1913

Vicious

/vĭsh'-əs/ · Vi·cious · IPA /ˈvɪʃəs/
01 a. Characterized by vice or defects; defective; faulty; imperfect.
  1. 1.
    Characterized by vice or defects; defective; faulty; imperfect.
    “Though I perchance am vicious in my guess.” Shak.
    “The title of these lords was vicious in its origin.” Burke.
    “A charge against Bentley of vicious reasoning.” De Quincey.
  2. 2.
    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.
  3. 3.
    Wanting purity; foul; bad; noxious; as, vicious air, water, etc.
  4. 4.
    Not correct or pure; corrupt; as, vicious language; vicious idioms.
  5. 5.
    Not well tamed or broken; given to bad tricks; unruly; refractory; as, a vicious horse.
  6. 6.
    Bitter; spiteful; malignant.[Colloq.]