Ānanda means bliss or delight. The Taittirīya Upaniṣad describes an ascent through layers of the self ending in the sheath of bliss, and teaches that beings are born from bliss and return to it. Vedānta distinguishes this bliss, which is the nature of the self, from pleasures that depend on objects and pass away.
Ānanda
Bliss: the joy that Vedānta holds to be the nature of the self and of Brahman, beyond pleasure and pain.
Also: Ananda