| 2026-03-02 | Happy as a ___ |
| 2025-12-05 | Silent sort |
| 2025-11-03 | Happy as a ___ |
| 2025-07-24 | One might be cooked "casino"-style |
| 2025-07-19 | Chowder ingredient |
| 2025-03-30 | Dollar, informally |
| 2024-10-23 | Oyster relative |
| 2024-10-02 | Dollar, informally |
| 2024-05-05 | Go silent, with "up" |
| 2024-04-07 | Cioppino ingredient |
| 2024-02-07 | $1 bill, in slang |
| 2024-01-23 | Chowder morsel |
| 2023-10-18 | Stop talking, with "up" |
| 2022-09-30 | Zip it, with "up" |
| 2022-05-20 | Sort who refuses to answer |
| 2022-01-31 | Chowder morsel |
| 2021-08-03 | Happy as a ___ |
| 2020-09-23 | End of a "happy" simile |
| 2020-09-20 | Chowder ingredient |
| 2020-07-18 | Smacker |
| 2020-06-12 | Geoduck, e.g. |
| 2019-08-30 | Shut (up) |
| 2019-06-12 | Silent type |
| 2019-05-18 | Tough person to get information from |
| 2019-01-06 | One keeping a secret, metaphorically |
| 2018-09-26 | Quahog or geoduck |
| 2018-03-16 | Silent sort |
| 2018-02-05 | Tight-lipped sort |
| 2017-09-20 | Chowder flavor |
| 2017-08-14 | Raw bar offering |
| 2017-07-19 | One who's tight-lipped |
| 2017-06-04 | Refuse to talk, with "up" |
| 2017-03-29 | Simoleon |
| 2016-12-25 | Dollar, in slang |
| 2016-10-01 | Symbol of happiness |
| 2016-01-21 | Place for steamers |
| 2013-12-20 | Tight-lipped sort |
| 2013-10-24 | Paella ingredient, perhaps |
| 2013-08-27 | Chowder ingredient |
| 2013-03-26 | Happy as a ___ |
| 2013-01-29 | Tight-lipped sort |
| 2012-11-14 | Blabber's opposite |
| 2011-10-31 | Paradigm of happiness |
| 2010-07-11 | Buck |
| 2010-04-07 | Symbol of uncommunicativeness |
| 2009-11-04 | Stop talking, with "up" |
| 2009-04-09 | Chowder morsel |
| 2009-03-01 | Buck |
| 2008-04-27 | Symbol of happiness |
| 2008-01-25 | Buck |
| 2007-11-24 | Good secret-keeper |
| 2007-05-16 | Quahog, e.g. |
| 2007-04-11 | Silent sort |
| 2006-11-05 | Dollar, slangily |
| 2005-10-04 | Secretive sort |
| 2005-07-19 | Littleneck, e.g. |
| 2005-06-22 | Silent one |
| 2005-01-08 | Buck |
| 2004-02-25 | Secretive sort |
| 2004-01-18 | Soup or sandwich ingredient |
| 2004-01-05 | One who's close-mouthed |
| 2003-07-31 | Shut (up) |
| 2002-08-07 | Steamer, e.g. |
| 2002-05-20 | Chowder morsel |
| 2002-02-03 | One who won't tell |
| 2001-09-04 | Chowder morsel |
| 2001-04-15 | Smacker |
| 2000-12-06 | Hardly a blabbermouth |
| 2000-03-22 | Symbol of happiness |
| 2000-02-13 | Shut (up) |
| 1999-10-23 | Hardly a blabbermouth |
| 1999-05-05 | Bisque bit |
| 1999-01-05 | Symbol of noncommunication |
| 1998-06-28 | Hardly a blabbermouth |
| 1998-06-20 | Smacker |
| 1998-05-16 | Dollar, in slang |
| 1997-08-01 | With 15-Across, linguini topping |
| 1996-11-14 | Silent one |
| 1996-10-24 | Symbol of happiness |
| 1996-07-04 | Hardly a blabbermouth |
| 1995-12-28 | Silent one |
| 1995-01-08 | Quahog |
| 1994-03-02 | Paradigm of happiness |
| 1993-12-26 | Happy one |