Short "u" sound:
* Bubbly
* Cuddle
* Double
* Juggle
* Muddle
* Rumble
* Scrabble
* Trouble
Other words with a similar but slightly different vowel sound (more like "uh" than "uh-uh"):
* Blood
* Flood
* Good
* Hood
* Look
* Put
* Sugar
Let me know if you want to explore words with different vowel sounds!