| Clue | Source | Date |
|---|---|---|
| Completely lacking in intelligence | ||
| Mindless | New York Times Mini | 24 Feb 2024 |
| Blank, expressionless | The Guardian Speedy | 19 Nov 2023 |
| Universities host band in holidays, being unoccupied | The Telegraph Toughie | 13 Oct 2022 |
| MT | LA Times Daily | 06 May 2022 |
| MT | The Washington Post | 06 May 2022 |
| Empty-headed | The Times Concise | 21 Mar 2021 |
| Empty; inane | The Telegraph Quick | 24 Jun 2020 |
| Lacking intelligence | The Times Concise | 25 Mar 2020 |
| Inane | The Telegraph Quick | 09 Oct 2019 |
| Old university in America when holiday starts is empty | ||
| There's nothing to it: knock back most of the sparkling wine - it's fairly unctuous | Irish Times Crosaire | 19 Aug 2017 |
| Devoid of substance | USA Today | 28 Apr 2015 |
| Devoid of substance | ||
| Empty, as a stare | ||
| Empty |