1. invalidate, annul, quash, void, avoid, nullify -- (declare invalid; "The contract was annulled"; "void a plea")
2. invalidate, nullify -- (show to be invalid)
3. neutralize, neutralise, nullify, negate -- (make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts")
1.
What events might nullify these calculation. - from Ulysses by James Joyce