| Clue | Source | Date |
|---|---|---|
| Disappointing response to "Any ideas?" | The Telegraph Cross Atlantic | 28 Nov 2025 |
| Zippo | Wall Street Journal | 08 Jan 2025 |
| Zero, zip, nada | ||
| Zero | New York Times | 21 Feb 2019 |
| Zero | ||
| Zero | ||
| Zilch | Universal | 28 May 2016 |
| Zilch | Eugene Sheffer | 14 May 2016 |
| Zero | Premier Sunday | 07 Feb 2016 |
| Zilch | ||
| Zip | New York Times | 25 Sep 2015 |
| Zip | ||
| Zero | ||
| Less than any | ||
| Zero | ||
| Zero | ||
| Nobody at all | ||
| Zilch | ||
| Zip | ||
| Zero | ||
| Nobody at all | ||
| Less than any | ||
| Zippo | ||
| Opposite of all | ||
| Nobody. | ||
| Nary a soul. |