Akademik

nullifier
noun
1. an advocate of nullification; someone who believes that a state can resist federal laws
Derivationally related forms: ↑nullify
Hypernyms: ↑advocate, ↑advocator, ↑proponent, ↑exponent
2. an official who can invalidate or nullify
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my bank check was voided and I wanted to know who the invalidator was

Syn: ↑invalidator, ↑voider
Derivationally related forms: ↑nullify, ↑void (for: ↑voider), ↑invalidate (for: ↑invalidator)
Hypernyms: ↑official, ↑functionary

Useful english dictionary. 2012.