| Answer | Crossword Clue |
|---|---|
| negator | cause to be ineffective or invalid |
| negators | cause to be ineffective or invalid |
| NEGATE | Cause to be invalid |
| ground | to render (an argument, position, person, etc.) ineffective or invalid; refute |
| gainsay | to declare to be untrue or invalid |
| cold | (in sports and games) to become unproductive or ineffective; be unable to score |
