| Clue | Source | Date |
|---|---|---|
| Bubblehead | Eugene Sheffer | 18 Dec 2025 |
| US informal back-formation meaning "scatterbrain" | The Times Specialist Sunday | 15 Jun 2025 |
| Scatterbrained one | USA Today Quick | 23 Feb 2025 |
| Ninny | Newsday | 18 Sep 2024 |
| Sap | Newsday | 18 May 2024 |
| Spacey sort | New York Times | 31 Dec 2023 |
| Scatterbrained sort | New York Times | 05 Sep 2022 |
| Bubblehead | Newsday | 28 Jan 2022 |
| Bubblehead | Eugene Sheffer | 10 Nov 2021 |
| Ninny | Newsday | 26 Aug 2021 |
| Bubblehead | Eugene Sheffer | 02 May 2020 |
| Scatterbrain | Wall Street Journal | 29 Dec 2018 |
| Space cadet on Earth | Universal | 09 Dec 2018 |
| Airhead | New York Times | 23 Oct 2018 |
| Twit | The Washington Post | 08 Mar 2018 |
| Twit | LA Times Daily | 08 Mar 2018 |
| Space cadet on Earth | ||
| Scatterbrain | ||
| Airhead | ||
| Scatterbrain | Newsday | 28 Mar 2017 |
| Dingbat | LA Times Daily | 15 Nov 2016 |
| Chowderhead | LA Times Daily | 23 Jun 2016 |
| Scatterbrained sort | Wall Street Journal | 14 Apr 2016 |
| Chowderhead | ||
| Ding-a-ling | LA Times Daily | 15 Apr 2015 |
| Airhead | Universal | 15 Mar 2015 |
| Scatterbrain | LA Times Daily | 19 Feb 2015 |
| Scatterbrained sort | Thomas Joseph | 03 Jan 2015 |
| Scatterbrain | ||
| Scatterbrain | ||
| Ding-a-ling | ||
| Space cadet | ||
| Ding-a-ling | ||
| Airhead | ||
| Chucklehead | ||
| Space cadet | ||
| Scatterbrain | ||
| Flake | ||
| Scatterbrain | ||
| Ninny | ||
| Featherbrain | ||
| Airhead | New York Times | 31 Oct 2011 |
| Scatterbrain | ||
| Airheaded sort | ||
| Airhead | ||
| Airhead | ||
| Airhead | ||
| Valley girl | ||
| Airhead | ||
| Scatterbrain | ||
| Space cadet | ||
| Nutty sort | ||
| Airhead | ||
| Boob |