| 2026-03-17 | Unflinching in the face of danger |
| 2024-12-31 | Stone-faced |
| 2023-08-07 | Not showing emotion |
| 2023-06-18 | Impassive |
| 2023-05-22 | Showing little emotion |
| 2023-03-28 | Showing no emotion |
| 2023-03-27 | Uncomplaining, say |
| 2023-01-09 | Showing no emotion |
| 2022-09-04 | Not easily moved |
| 2022-08-11 | Adherent of a philosophy of wisdom, justice, courage and moderation |
| 2022-03-17 | Unflinching |
| 2022-03-05 | Imperturbable |
| 2021-10-17 | Unflappable |
| 2021-07-25 | Like Vulcans, typically |
| 2021-01-14 | Unlikely to crack a smile, say |
| 2020-12-07 | Keeping a stiff upper lip |
| 2020-10-06 | Showing no emotion |
| 2020-04-29 | Zeno, for one |
| 2020-02-02 | Poker-faced |
| 2019-08-23 | Epictetus, e.g. |
| 2019-06-18 | Stone-faced |
| 2019-05-26 | Seneca, philosophically |
| 2019-05-04 | Hard to move |
| 2019-02-03 | Poker-faced |
| 2018-12-09 | Sort with a stiff upper lip |
| 2018-07-08 | Unflappable |
| 2017-06-02 | Not the movable type |
| 2017-02-11 | Not easily moved |
| 2016-05-11 | Showing no emotion |
| 2016-03-20 | Phlegmatic |
| 2015-07-18 | Unmovable |
| 2014-09-28 | Unflinching |
| 2014-06-23 | Unflinching in the face of pain, say |
| 2014-02-23 | Unemotive |
| 2014-01-28 | Impassive |
| 2013-05-16 | Unresponsive? |
| 2013-03-05 | Follower of Zeno |
| 2011-01-12 | Unmoved |
| 2011-01-02 | Impassive |
| 2010-11-01 | Not reacting to pain, say |
| 2010-10-23 | Not moved much |
| 2010-06-23 | Stiff-upper-lip sort |
| 2010-04-11 | Follower of the philosopher Epictetus |
| 2010-03-14 | Giving nothing away, in a way |
| 2010-03-02 | Betraying no emotion |
| 2009-07-05 | Impassive |
| 2009-04-21 | Showing no emotion |
| 2009-01-03 | Immovable type |
| 2008-11-18 | One who never cries "Ow!" |
| 2008-11-15 | Bullet-biting type |
| 2008-10-19 | Phlegmatic |
| 2008-09-09 | One who bites the bullet |
| 2007-12-14 | Bite-the-bullet type |
| 2007-10-15 | Indifferent to pleasure or pain |
| 2006-03-31 | Far from demonstrative |
| 2006-02-05 | Bite-the-bullet type |
| 2005-05-21 | Hard to get to |
| 2005-01-23 | Impassive |
| 2004-09-19 | Zeno, notably |
| 2004-07-30 | Hardly the screaming type |
| 2004-03-09 | Follower of Zeno |
| 2001-06-03 | Stiff-upper-lip type |
| 2000-03-29 | Zeno, for one |
| 1999-12-15 | Zeno was one |
| 1999-10-18 | Impassive |
| 1999-09-27 | Impassive |
| 1999-09-16 | Stiff-upper-lip type |
| 1999-06-02 | Like Zeno |
| 1999-03-23 | One who grins and bears it |
| 1999-03-16 | Zeno, notably |
| 1997-12-17 | Zeno follower |
| 1997-06-09 | Impassive |
| 1997-04-03 | Zeno follower |
| 1996-12-11 | Uncomplaining |
| 1995-11-28 | Hardly emotional |
| 1995-10-24 | Tough guy |
| 1995-06-27 | Unresponding |
| 1995-06-22 | Impassive |
| 1995-06-19 | Like Zeno |
| 1994-09-14 | Having a stiff upper lip |