General:
* Joyful: Filled with or expressing joy.
* Cheerful: Happy and lively.
* Delighted: Feeling or showing great pleasure.
* Content: Satisfied and at ease.
* Pleased: Feeling or showing happiness or satisfaction.
* Merry: Cheerful and lighthearted.
* Glad: Feeling or showing pleasure and happiness.
More intense:
* Ecstatic: Feeling or expressing overwhelming happiness or joy.
* Elated: Very happy and excited.
* Jubilant: Feeling or expressing great happiness or triumph.
* Thrilled: Feeling or showing great excitement and pleasure.
* Enraptured: Filled with delight and wonder.
Other words:
* Blissful: Experiencing or characterized by perfect happiness.
* Euphoric: Feeling intense happiness and excitement.
* Rapturous: Feeling or expressing great joy and delight.
* Exuberant: Full of energy and enthusiasm; overflowing with happiness.
The best word to use depends on the specific context and the emotion you want to convey.