| Clue | Source | Date |
|---|---|---|
| Don't forget | Newsday | 10 Jan 2025 |
| "Best sleep on it before deciding" | LA Times Daily | 03 Jun 2023 |
| Have no reservations | Wall Street Journal | 19 Mar 2022 |
| Make absolutely certain | Wall Street Journal | 21 Sep 2021 |
| Make certain | Universal | 07 Dec 2020 |
| Have no doubts | New York Times | 21 Apr 2020 |
| Make certain | The New Yorker | 13 Jan 2020 |
| Have no doubt | USA Today | 07 Apr 2019 |
| Have no doubt | ||
| Have no doubt | The Washington Post | 15 Oct 2016 |
| Remove all doubt | ||
| Know | ||
| Have no doubt | ||
| Have no doubt | ||
| Have no doubt | ||
| Have no reservations? | ||
| Eliminate all doubt | ||
| To ____ (certainly!) | ||
| Take care | ||
| Have no doubt | ||
| To ___ (certainly!). | ||
| To ___ (certainly). | ||
| To ___. | ||
| "Check your work" | ||
| To ___ (certainly). | ||
| Make 100% certain | ||
| Have certainty. |