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750 words
P/SAT / ACT Program

nullify

[nuhl-uh-fahy] [ˈnʌləˌfaɪ]
verb
  • to render ineffective or useless; cancel out
  • " 'Today we are on the brink of a momentous battle, which, if it does not go in our favor, may nullify all our efforts on behalf of the Chuck Norris Total Gym.' "