1. denying the existence or truth of something
Usage: present participle of negate
2. making something ineffective or void
Usage: present participle of negate

Examples

• The witness was negating the defendant’s alibi with her testimony.
• His poor attitude is negating all the progress he made earlier.
• The new evidence is negating our previous assumptions about the case.
• She kept negating every suggestion we made during the meeting.
• The storm is negating our efforts to repair the roof.
• By negating the contract terms, they violated the agreement.