unvital
/ʌnˈvaɪtəl/Definitions
1. adjective
Lacking vitality or the power to stimulate or inspire.
“The unvital performance of the local theater troupe failed to captivate the audience.”
2. noun
A quality or characteristic lacking vitality or the power to stimulate or inspire.
“The critics pointed out the lack of unvital themes in the artist’s new work.”