| Clue | Source | Date |
|---|---|---|
| Bring into question, with "on" | Universal | 21 Mar 2023 |
| Make something seem less likely to be true | New York Times | 08 Jul 2020 |
| Lead to suspicions about, with 'on' | Wall Street Journal | 24 Sep 2018 |
| Lead to suspicions about, with "on" | ||
| Cause people to disbelieve, with "on" | ||
| Raise questions | ||
| Raise questions | ||
| Have misgivings |