DictionarynullifyMake ineffective
verb

nullify

NUL-ih-fye/ˈnʌlɪfaɪ/

To make something invalid or ineffective.

The official nullifies the permit by stamping it void.

An adult official presses a stamp reading VOID onto a permit card, making it invalid.
Etymology

Literally “make nothing,” nullify applies that idea to legal force: a nullified act or agreement is made ineffective rather than physically destroyed.

In context

US National Archives32:06
an individual State should be allowed to nullify the federal government's laws
For the People, For the Country: Patrick Henry’s Final Political Battle

More examples

  • One missing signature could nullify the application.
  • The change effectively nullifies the earlier restriction.
  • The penalty nullified their apparent advantage.

Forms

nullify · nullifies · nullified · nullifying

nullification noun — the act of making something invalid

Similar words

invalidate
Invalidate means remove validity; nullify can also mean cancel an effect or advantage.
annul
Annul formally declares something void; nullify also covers making something practically ineffective.