| Clue | Source | Date |
|---|---|---|
| Secretly unseal, perhaps | New York Times | 25 May 2023 |
| Unseal without ripping | ||
| Unseal without ripping | LA Times Daily | 02 Oct 2021 |
| Unseal furtively, as an envelope | New York Times | 17 Jan 2021 |
| Unseal without tearing | Wall Street Journal | 02 Apr 2018 |
| Unseal without tearing | ||
| Get unglued, as an envelope | ||
| Get unglued, as an envelope | ||
| Unseal surreptitiously, as an envelope | ||
| Unseal furtively, in a way | ||
| Get unglued | ||
| Unglue, as an envelope |