nullified; nullifying
Definition of nullify
1
: to make null (see null entry 1 sense 1)
especially
: to make legally null and void
nullify a law
2
: to make of no value or consequence (see consequence sense 3)
a promise later nullified
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Merriam-Webster unabridged
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Time Traveler for nullify
The first known use of nullify was in 1607
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