platitudinous vs platitudinal

platitudinous and platitudinal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
platitudinous	No	Yes	No	No
platitudinal	No	Yes	No	No

As adjectives, platitudinous and platitudinal are synonyms defined as:

platitudinous and platitudinal: dull and tiresome but with pretensions of significance or originality

Other synonyms of platitudinous include bromidic, corny.

platitudinous (adjective)	platitudinal (adjective)
dull and tiresome but with pretensions of significance or originality	dull and tiresome but with pretensions of significance or originality