| 2025-04-23 | Middle X or O |
| 2025-04-13 | Tic follower |
| 2024-11-22 | Part of OOO |
| 2024-11-11 | The second O of O-O-O |
| 2024-06-27 | Washington's Sea-___ Airport |
| 2024-05-30 | Washington's Sea-___ Airport |
| 2024-03-28 | O-O-O part |
| 2023-11-09 | See 65-Down |
| 2023-07-31 | Tic-___-toe |
| 2023-07-26 | Tic-___ |
| 2023-03-31 | Part of X-X-X |
| 2023-03-21 | "Tic ___ Dough" (bygone game show) |
| 2023-01-23 | Tic-___-toe |
| 2022-03-13 | Sea-___ Airport |
| 2022-02-12 | Central square, perhaps |
| 2021-06-10 | X in XXX, maybe |
| 2021-04-12 | Tic-___-toe |
| 2021-04-02 | Toe preceder |
| 2020-10-04 | Middle of a certain three-in-a-row |
| 2020-08-09 | Washington's Sea-___ Airport |
| 2020-03-04 | Middle X or O |
| 2019-08-11 | Part of a three-in-a-row |
| 2019-01-23 | Sea-___ (Washington airport) |
| 2016-12-25 | Middle X or O |
| 2015-04-05 | Game center? |
| 2014-11-28 | XXX part |
| 2014-10-31 | Sea-___ |
| 2014-07-27 | Part of a winning combination |
| 2014-04-04 | Middle square, maybe |
| 2014-01-05 | Tic ___ (candy) |
| 2014-01-04 | Tie ___ |
| 2013-09-22 | What X-O-X lacks? |
| 2013-06-27 | Washington's Sea-___ Airport |
| 2013-01-22 | Tic ___ (breath mint) |
| 2012-08-09 | See 23-Across |
| 2011-09-02 | Certain X or O |
| 2011-06-16 | Sea-___ Airport |
| 2010-10-24 | One-third of a game win |
| 2009-11-29 | Certain X or O |
| 2008-09-25 | Middle X, say |
| 2008-04-20 | Certain X or O |
| 2008-02-04 | Tic-___-toe |
| 2007-08-04 | Central square, maybe |
| 2007-03-28 | X-X-X part |
| 2007-01-02 | Tic ___ (mint) |
| 2006-09-10 | Part of a winning combination |
| 2006-03-18 | Middle square, say |
| 2006-02-07 | Middle O of O-O-O |
| 2005-03-06 | XXX part |
| 2004-11-08 | Tic-___-toe |
| 2004-09-05 | Wash. State's Sea-___ Airport |
| 2004-05-25 | Middle X or O |
| 2004-03-01 | Tic-___-toe |
| 2004-02-24 | Center X or O |
| 2004-02-09 | Tic-___-toe |
| 2003-08-31 | One X |
| 2003-01-16 | Washington State's Sea-___ Airport |
| 2002-01-12 | Tie ___ |
| 2001-12-24 | Tic-___-toe |
| 2001-12-09 | Tic-___-toe |
| 2001-11-12 | Middle X of X-X-X |
| 2001-08-21 | Center X or O |
| 2000-12-29 | Part of X-X-X |
| 2000-10-31 | Middle of XXX |
| 2000-07-25 | Middle X or O |
| 2000-07-11 | Middle X of X-X-X |
| 1999-10-05 | Tic-___-toe |
| 1999-09-22 | "Hollywood Squares" square |
| 1999-08-07 | Part of a game win |
| 1998-10-17 | Part of OOO |
| 1998-06-07 | Part of X-X-X |
| 1998-01-10 | Middle of a kids' game |
| 1997-03-01 | One-third of XXX? |
| 1997-02-08 | Part of a winning combination |
| 1997-01-18 | Tic-toe tie |
| 1996-08-16 | "Tic ___ Dough" |
| 1996-07-09 | Tic-___toe |
| 1996-06-15 | Second of three X's |
| 1996-02-28 | Tic-___ (candy) |
| 1996-02-19 | Tic-___-toe |
| 1996-01-21 | Part of XXX |
| 1995-12-03 | The second X in XXX |
| 1995-09-16 | Part of a game win |
| 1994-12-29 | Second O of O-O-O |
| 1994-12-03 | Toe preceder |
| 1994-07-20 | Tic-toe bridge |
| 1994-07-02 | Center square in a game |
| 1994-06-27 | Middle X or O |
| 1994-05-08 | Middle X or O |
| 1994-03-05 | Second X or O |