Antonyms of adj inspirational

1 sense of inspirational

Sense 1
inspirational -- (imparting a divine influence on the mind and soul)

INDIRECT (VIA sacred) -> profane, secular -- (not concerned with or devoted to religion; "sacred and profane music"; "secular drama"; "secular architecture", "children being brought up in an entirely profane environment")

Similarity of adj inspirational

1 sense of inspirational

Sense 1
inspirational -- (imparting a divine influence on the mind and soul)
       => sacred (vs. profane) -- (concerned with religion or religious purposes; "sacred texts"; "sacred rites"; "sacred music")