Disappointed

"Disappointed" is a powerful word in the English language. It provides direct and powerful critique whilst expressing little arrogance. It communicates that the speaker is experiencing sadness, unlike other forms of criticism that communicate that the speaker is experiencing anger.

The only problem is, there aren't many good synonyms. Here's the best I could come up with:

• perplexed
• baffled
• peturbed
• dismayed
• distressed