| Clue | Source | Date |
|---|---|---|
| Certainly not! (2,3,4) | ||
| Exclamation of disbelief | USA Today | 17 Feb 2017 |
| Joey's now a butcher with a Spanish-sounding name? As if! | Irish Times Crosaire | 14 Aug 2015 |
| 73-Down, relatively | ||
| "As if!" | ||
| "As if!" | ||
| "Not in a million years!" | ||
| "When pigs fly!" | ||
| "When pigs fly!" | ||
| Slangy dismissal | ||
| "I don't think so!" | ||
| "I don't think so!" | ||
| "Fuhgeddaboudit!" | ||
| "Uh-uh!" | ||
| "Uh-uh!" | ||
| "Huh-uh" | ||
| Nay | ||
| "Never!" | ||
| "Forget it!" |