Words similar to dumbfounded

Example sentences for: dumbfounded

How can you use “dumbfounded” in a sentence? Here are some example sentences to help you improve your vocabulary:

The problem is that I run into people who, after knowing me for a while, are dumbfounded to find out I am not an only child, and they act like there's something wrong with me because I'm not in contact with my siblings.
Dumbfounded, I asked why he hadn't taken them.