Antonyms of adj platitudinal

1 sense of platitudinal

Sense 1
bromidic, corny, platitudinal, platitudinous -- (dull and tiresome but with pretensions of significance or originality; "bromidic sermons")

INDIRECT (VIA unoriginal) -> original -- (being or productive of something fresh and unusual; or being as first made or thought of; "a truly original approach"; "with original music"; "an original mind")

Similarity of adj platitudinal

1 sense of platitudinal

Sense 1
bromidic, corny, platitudinal, platitudinous -- (dull and tiresome but with pretensions of significance or originality; "bromidic sermons")
       => unoriginal (vs. original) -- (not original; not being or productive of something fresh and unusual; "the manuscript contained unoriginal emendations"; "his life had been unoriginal, conforming completely to the given pattern"- Gwethalyn Graham)