Filed from 2 published puzzles

NOTAHOPE

Set to 2 different clues across 2 published puzzles, most often "Impossible!" — The New York Times, Saturday, 28 October 2006.

8 letters

Every clue on record, most used first

"Impossible!"once
The New York Times — Saturday, 28 October 2006
"Forget it!"once
The New York Times — Thursday, 23 January 1997

Other answers to these clues

AINTGONNAHAPPEN15 letters
ICANT5 letters
ISAYNO6 letters
ITCOULDNTBE11 letters
IWONT5 letters
IXNAY5 letters
NAH3 letters
NIX3 letters
NOCANDO7 letters
NOCHANCE8 letters
NODEAL6 letters
NODICE6 letters