from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Characterised by cliches or platitudes.
from the GNU version of the Collaborative International Dictionary of English
- adj. Abounding in platitudes; of the nature of platitudes; uttering platitudes.
from The Century Dictionary and Cyclopedia
- Relating to or characterized by platitude or platitudes; stale; trite; flat; dull; insipid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. dull and tiresome but with pretensions of significance or originality
From platitude + -in- + -ous, probably after multitudinous. (Wiktionary)