| Clue | Source | Date |
|---|---|---|
| , 17 Down & 6 Down Betray nothing in tower with a uniform vertical aspect | The Telegraph Toughie | 28 Sep 2021 |
| low profile | Eugene Sheffer | 26 Nov 2016 |
| __ straight face | LA Times Daily | 15 Jul 2016 |
| __ straight face | ||
| -- cool head | Premier Sunday | 08 Mar 2015 |
| -- cool head | ||
| -- stiff upper lip | ||
| -- low profile | ||
| -- straight face | ||
| "I couldn't ___ straight face!" | ||
| ___ straight face (don't crack up) | ||
| __ straight face | ||
| ___ low profile | ||
| "I couldn't _____ straight face!" | ||
| __ stiff upper lip | ||
| "___ civil tongue in your head!" |