A feeling of unhappiness and disappointment. (Cambridge Dictionary)
Dismay is a strong feeling of fear, worry, or sadness that is caused by something unpleasant and unexpected. (Collins Dictionary)
If you are dismayed by something, it makes you feel afraid, worried, or sad. (Collins Dictionary)
Concern and distress caused by something unexpected. (Oxford Dictionaries)
To cause to lose courage or resolution (as because of alarm or fear). (Merriam – Webster)
Dismay and Disquiet.
Business in ‘utter dismay’ over May vote.