Nullifier

noun

Definitions

Noun
  1. 1
    One who, or that which, nullifies.
  2. 2
    an official who can invalidate or nullify wordnet
  3. 3
    A person holding the belief that states could nullify federal laws within their borders. US, historical
  4. 4
    an advocate of nullification; someone who believes that a state can resist federal laws wordnet

Etymology

From nullify + -er.

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