| 2026-08-09 | x or y |
| 2026-06-21 | Follower of "x" or "y" |
| 2026-04-26 | Grid line |
| 2026-01-13 | x or y |
| 2025-11-22 | X or Y, often |
| 2025-02-20 | Enemy alliance of W.W. II |
| 2025-02-01 | Center of a revolution |
| 2025-01-27 | x or y, on a graph |
| 2024-12-12 | x, y or z |
| 2024-11-24 | Alliance of powers |
| 2024-02-26 | "x" or "y" number line, in graphing |
| 2024-02-13 | Plot line? |
| 2023-07-09 | ___ & Allies (board game) |
| 2023-05-23 | Graph line |
| 2022-09-16 | Turning point |
| 2021-11-21 | Line through two poles |
| 2021-11-10 | x or y, in math class |
| 2021-11-03 | Graph line |
| 2021-10-21 | x, for one |
| 2021-08-05 | Graph component |
| 2021-08-02 | x, y or z, in geometry |
| 2021-02-02 | x or y, in plane geometry |
| 2020-12-22 | Center of rotation |
| 2020-08-22 | Pole position? |
| 2020-07-26 | What the abscissa and ordinate are measured from |
| 2020-07-18 | x, y or z |
| 2020-03-30 | Enemy alliance in W.W. II |
| 2020-01-23 | Pivot point |
| 2019-12-23 | x or y, on a graph |
| 2019-07-30 | ___ & Allies (classic board game) |
| 2019-06-13 | Line of symmetry |
| 2017-07-15 | Japan was a member of it |
| 2017-05-18 | x, y or z follower |
| 2017-03-23 | x or y |
| 2017-02-06 | Graph line |
| 2017-01-16 | W.W. II foe |
| 2016-10-07 | Quadrant separator |
| 2016-05-26 | y, for one |
| 2015-06-09 | W.W. II foe |
| 2015-05-05 | Pivot point |
| 2014-03-20 | Pole connector |
| 2013-09-08 | Turning point |
| 2013-04-26 | 1940's ___ Pact |
| 2012-12-05 | Line of symmetry |
| 2012-11-26 | Line of rotation |
| 2012-09-25 | Pivotal line |
| 2012-07-16 | W.W. II enemy |
| 2012-07-02 | Germany, Italy and Japan, in W.W. II |
| 2011-10-09 | Revolutionary line |
| 2011-08-08 | W.W. II foe, with "the" |
| 2011-06-13 | x or y line on a graph |
| 2011-06-06 | W.W. II foe, with "the" |
| 2011-05-24 | Something to reflect on? |
| 2011-04-13 | Something to reflect on? |
| 2010-11-17 | Italy's side, once |
| 2010-06-28 | x or y, on a graph |
| 2010-06-23 | Graph line |
| 2009-05-06 | Line of rotation |
| 2009-01-09 | Something to turn on |
| 2008-07-30 | W.W. II foe |
| 2008-07-08 | Bush's "___ of evil" |
| 2008-04-17 | Transnational cooperation |
| 2008-01-05 | Alliance |
| 2007-06-26 | Graph line |
| 2007-06-06 | Graph line |
| 2007-02-01 | Alliance |
| 2006-07-31 | Line of rotation |
| 2006-06-13 | W.W. II foe |
| 2006-04-20 | Line on a graph |
| 2006-04-09 | ___ of Evil |
| 2006-04-07 | x, y or z |
| 2006-03-09 | Bisector |
| 2005-10-04 | W.W. II enemy |
| 2005-08-02 | ___ of Evil |
| 2005-07-25 | Base line on a graph |
| 2005-05-18 | Graph line |
| 2005-05-17 | Main line |
| 2004-11-11 | What a mirror image has |
| 2004-05-23 | 1940's foe, with "the" |
| 2004-01-05 | Bush's ___ of Evil |
| 2003-12-25 | x, for one |
| 2003-08-25 | Line of symmetry |
| 2003-04-28 | Line of rotation |
| 2002-09-09 | Line on a graph |
| 2002-03-06 | Central line |
| 2001-12-23 | X, Y or Z |
| 2001-04-01 | x, y or z |
| 2000-09-20 | X or Y or Z |
| 2000-07-04 | Allies' foe |
| 2000-05-17 | W.W. II enemy |
| 1999-11-23 | Allies' foe in W.W. II |
| 1999-09-09 | x or y, e.g. |
| 1999-08-04 | Line of symmetry |
| 1999-06-17 | Central line |
| 1999-04-14 | Graph line |
| 1999-02-15 | Allies' foe |
| 1997-07-13 | Hungary was a member of it |
| 1997-05-19 | X or Y, on a graph |
| 1997-04-03 | 40's foe |
| 1997-03-13 | W.W. II side |
| 1996-08-29 | W.W. II powers |
| 1996-08-18 | "Them" of the 40's |
| 1996-08-15 | Poles' connector |
| 1996-06-26 | Center of a revolution |
| 1996-06-08 | Stick through the middle |
| 1996-04-23 | World War II foe |
| 1994-10-19 | Bygone alliance |
| 1994-09-06 | Turning point |
| 1994-08-17 | W.W.II foe |