negate
/nɪˈɡeɪt/
verb
- To cancel out the effect or force of something; to make something ineffective.
- The new evidence negates the earlier theory about the crime.
- Adding more sugar will negate the sour taste of the lemon.
- A good defense can negate the opponent's strongest attack.
- To deny or contradict a statement or idea.
- He negated her claim by showing the receipts.
- The study negates the popular belief that coffee is bad for you.
- The witness negated the suspect's alibi with clear proof.
- In logic or mathematics, to make a statement or value negative or opposite.
- The programmer used a function to negate the boolean value.
- To negate a number, you change its sign from positive to negative.
- In logic, to negate a true statement makes it false.