| Clue | Source | Date |
|---|---|---|
| Aren't superficial | ||
| Be strongly and wholeheartedly felt | The Washington Post Sunday | 14 Feb 2021 |
| Be felt very strongly | Newsday | 31 Jan 2021 |
| Still waters do it, so they say | Wall Street Journal | 10 Jun 2020 |
| Proverbially, still waters ____ | The Times Specialist Sunday | 30 Dec 2018 |
| Be well established | Newsday | 10 Apr 2015 |
| Be well established |