What is an antonym for disgruntled?

Here are some antonyms for disgruntled, depending on the specific context:

Positive:

* Satisfied

* Content

* Happy

* Pleased

* Delighted

* Gratified

* Fulfilled

Neutral:

* Content

* Neutral

* Indifferent

* Unconcerned

Other:

* Pleased

* Cheerful

* Happy

* Enthusiastic

* Motivated

The best antonym will depend on the specific situation and the reason for the disgruntled feeling.