Plenitude is a feeling that an experience is satisfying because it is full or complete. The music brought him a feeling of plenitude and freedom. = fullness, completeness
The quality or state of being full or complete; fullness; completeness; abundance; as, the plenitude of space or power
If there is a plenitude of something, there is a great quantity of it. What is the use of a book about interior design without a plenitude of pictures in color? = abundance