| Answer | Crossword Clue |
|---|---|
| ZOOM | Move with a low hum. |
| zooms | to move with a loud hum or buzz |
| zoomed | to move with a loud hum or buzz |
| zoom | to move with a loud hum or buzz |
| chuff | to chug (to move with a dull explosive sound) / gruff (low and harsh in speech) |
| crooning | Hum or sing in a soft, low voice, esp. in a sentimental manner |
