* up
* under
* uncle
* umbrella
* cup
However, there are some exceptions and other spellings that can also make the short U sound. These include:
* ou as in count
* o as in sock
* oo as in food (but not in words like "moon" or "food" where it has the long OO sound)
It's important to remember that English pronunciation can be tricky, and there are always exceptions to the rules.