| Clue | Source | Date |
|---|---|---|
| Buzzing sound? | Universal | 14 Nov 2023 |
| Up-start? | New York Times | 11 Jan 2023 |
| Puzzling sound? | Universal | 27 Nov 2020 |
| Upfront? | New York Times | 01 Nov 2020 |
| Beginning to understand? | Wall Street Journal | 26 Dec 2019 |
| Sound in ''puzzle'' | Newsday | 08 Dec 2019 |
| Gun sound? | ||
| Vowel sound in the word "dumb" | ||
| Vowel sound in "bug" | ||
| Ultra sound? | ||
| Vowel sound in "bug" | ||
| Puzzling sound? | ||
| Puzzling sound? | ||
| There's one in "puzzle" | ||
| Vowel sound in 'run' | ||
| Thumb's middle? | ||
| Bug's midsection | ||
| Vowel sound in "puzzle" | ||
| Schwa's cousin | ||
| Either vowel in "humdrum" |