What is the antonym of dejected?

The antonym of dejected depends on the context, but some common antonyms include:

* Cheerful

* Happy

* Elated

* Joyful

* Optimistic

* Enthusiastic

* Hopeful

* Spirited

* Buoyant

* Upbeat

The best antonym to use will depend on the specific situation and the nuance you want to convey.