Here are some synonyms for disgruntled:
* Unhappy
* Dissatisfied
* Resentful
* Angry
* Frustrated
* Discontented
* Grumbling
* Miffed
* Peeved
Examples:
* "The employees were disgruntled about the lack of raises."
* "He was disgruntled after being passed over for the promotion."
* "The customers were disgruntled with the poor service."
Note: "Disgrunted" is not a standard word in the English language. It's likely a misspelling of "disgruntled".