| Clue | Source | Date |
|---|---|---|
| On ___ (impetuously) | Wall Street Journal | 07 Aug 2019 |
| On ___ (impetuously) | ||
| "He got it on ___" (an impulse): 2 wds. | ||
| Capriciously, with "on" | LA Times Daily | 18 Dec 2016 |
| Capriciously, with "on" | ||
| On ___ (impulsively) | ||
| Impetuously, after "on" |