Dismay means unhappiness or distress. When one is caused these emotions it will cause them to cause feel dismayed.
Unhappy means not happy, down, sad, depressed, or angry.
dismay means noun: the feeling of despair or fear resulting from feeling of danger; using it as a verb: being unpleasantly surprised
Perhaps you mean "dismay", which is acute disappointment.
A feeling or cause of gloom or unhappiness
No, unhappiness is a noun. It refers to the state of not being happy or experiencing feelings of sadness or discontent.
Dismay is accented on the second syllable.
The past tense of dismay is dismayed.
"Dismay" is a noun, such as in the sentence "The girl was in dismay when she found out her favorite doll had been lost."
Happiness and unhappiness were measured out by Nemesis.
It was with dismay that I saw my broken car window.
No, dismay is a feeling and to moan is to make a sound.