| 2026-04-16 | "It's a ___!" |
| 2024-08-25 | "Three may keep a ___, if two of them are dead": Benjamin Franklin |
| 2024-04-11 | With 46-Across, some areas in Clue … or a hint to the first, fourth, twelfth and fifteenth rows of this puzzle |
| 2022-05-22 | Tryst partner / Discharging, as a liquid |
| 2021-09-29 | When revealed in this puzzle, it reverses the meanings of the answers to the starred clues |
| 2021-05-26 | It's meant to be kept |
| 2021-03-01 | Hush-hush |
| 2018-02-25 | Clandestine |
| 2017-12-26 | Like some handshakes and formulas |
| 2015-06-20 | Confidence |
| 2013-09-25 | Under wraps |
| 2013-05-17 | It can be dangerous when leaked |
| 2013-02-03 | Hidden |
| 2012-11-06 | With 74-Across, voting system that affords anonymity ... or the theme of this puzzle? |
| 2012-10-13 | With 34-Across, company's present occasion? |
| 2012-09-30 | Diary tidbit |
| 2011-06-07 | Nothing to write home about? |
| 2008-03-26 | It may be under your hat |
| 2004-12-05 | It may be hard to keep |
| 2003-08-16 | Shrouded |
| 2002-03-31 | Not meant to be repeated |
| 2002-02-01 | Spy's quest |
| 2001-02-20 | Hush-hush |
| 2001-02-05 | Hush-hush |
| 1999-12-13 | Hush-hush |
| 1999-08-12 | It may be hard for one person to carry |
| 1999-07-15 | Whispered words |
| 1998-01-24 | Closet |
| 1997-10-20 | Confidential matter |
| 1995-04-27 | Hush-hush |
| 1995-01-14 | Hush-hush |
| 1994-07-22 | Like some identities |