* Happy: This is the most common and basic form.
* Joyful: This implies a feeling of great happiness and delight.
* Cheerful: This suggests a bright and optimistic happiness.
* Merry: This conveys a feeling of lighthearted and festive happiness.
* Glad: This implies a feeling of contentment and satisfaction.
* Elated: This suggests a feeling of intense happiness and excitement.
* Jubilant: This conveys a feeling of triumphant and joyous happiness.
* Blissful: This implies a state of perfect happiness and contentment.
* Delighted: This suggests a feeling of great pleasure and satisfaction.
* Thrilled: This conveys a feeling of intense excitement and happiness.
* Ecstatic: This implies a feeling of overwhelming happiness and joy.
The best adjective to use will depend on the specific context and the nuance you want to convey.