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Verb: obviate  'ób-vee,eyt
  1. Do away with
    - rid of, eliminate
  2. Prevent the occurrence of; prevent from happening
    - debar, forefend, forfend, deflect, avert, head off, stave off, fend off, avoid, ward off

Derived forms: obviates, obviating, obviated

Type of: forbid, foreclose, forestall, preclude, prevent

Antonym: necessitate