This action will negate the effect of my efforts.
nullify, neutralize, cancel, undo, reverse, annul, void open-handedness, largess
خنثی کردن، نفی کردن
( Test )
She's not negating her emotional experience; she's explaining what happens when we feel those things--how our bodies respond to our feelings.
Source: New York Times
In this sentence, negating means: