platitudinous
pla·ti·tu·dinous
adjective
1.
dull and tiresome but with pretensions of significance or originality
- “bromidic sermons”
Origin
From platitude + -ous on analogy of other adjectives ending in -tudinous, from Latin -tūdin- + -ous, the oblique stem of -tūdō. Compare platitudinize.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.