To put an end to, especially formally and with authority

• extinguish

  1. To cause (a fire or light) to stop burning or shining; put out.
  2. To put an end to or make extinct; destroy:
  3. To bring about the extinction of (a conditioned response).

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  1. To cause (a fire or light) to stop burning or shining; put out.
  2. To put an end to or make extinct; destroy:
  3. To bring about the extinction of (a conditioned response).

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• void

  1. Containing no matter; empty.
  2. Not occupied; unfilled.
  3. Completely lacking; devoid:

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  1. Containing no matter; empty.
  2. Not occupied; unfilled.
  3. Completely lacking; devoid:

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• vitiate

  1. To reduce the value or quality of; impair or spoil:
  2. To corrupt morally; debase:
  3. To make ineffective (a contract or legal stipulation, for example); invalidate.

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  1. To reduce the value or quality of; impair or spoil:
  2. To corrupt morally; debase:
  3. To make ineffective (a contract or legal stipulation, for example); invalidate.

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• set-aside

  1. Something, such as land or a certain percentage of profits, that is set aside for a specific purpose.
  2. A program requiring that a percentage of government procurement contracts be reserved for disadvantaged businesses.

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  1. Something, such as land or a certain percentage of profits, that is set aside for a specific purpose.
  2. A program requiring that a percentage of government procurement contracts be reserved for disadvantaged businesses.

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• nullify

  1. To make null; invalidate.
  2. To counteract the force or effectiveness of.

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  1. To make null; invalidate.
  2. To counteract the force or effectiveness of.

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• negate

  1. To make ineffective or invalid; nullify:
  2. To make negative:
  3. To perform the machine logic operation NOT gate.

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  1. To make ineffective or invalid; nullify:
  2. To make negative:
  3. To perform the machine logic operation NOT gate.

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• cancel

  1. To annul or invalidate:
  2. To decide or announce that (a planned or scheduled event) will not take place, especially with no intention of holding it at a later time:
  3. To cross out with lines or other markings.

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  1. To annul or invalidate:
  2. To decide or announce that (a planned or scheduled event) will not take place, especially with no intention of holding it at a later time:
  3. To cross out with lines or other markings.

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• annul

  1. To make or declare void or invalid, as a marriage or a law; nullify.
  2. To bring to an end the effect or existence of; cancel out:

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  1. To make or declare void or invalid, as a marriage or a law; nullify.
  2. To bring to an end the effect or existence of; cancel out:

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• annihilate

  1. To destroy completely:
  2. To reduce to nonexistence:
  3. To defeat decisively:

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  1. To destroy completely:
  2. To reduce to nonexistence:
  3. To defeat decisively:

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• abrogate

  1. To abolish, do away with, or annul, especially by authority:

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  1. To abolish, do away with, or annul, especially by authority:

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• abolish

  1. To do away with; put an end to; annul:
  2. To destroy completely.

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  1. To do away with; put an end to; annul:
  2. To destroy completely.

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