Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun nullifier

2 senses of nullifier

Sense 1
nullifier -- (an advocate of nullification; someone who believes that a state can resist federal laws)
       => advocate, advocator, proponent, exponent -- (a person who pleads for a cause or propounds an idea)

Sense 2
invalidator, voider, nullifier -- (an official who can invalidate or nullify; "my bank check was voided and I wanted to know who the invalidator was")
       => official, functionary -- (a worker who holds or is invested with an office)