IPA: //plætɪˈtjuːdɪnəsli//
KK: /plætɪˈtjuːdɪnəsli/
In a way that expresses a statement that is dull or obvious, often repeated without thought.
He spoke platitudinously, offering the same tired phrases that everyone had heard before.
Platitudinously → It is formed from "platitude" (from French *platitude*, meaning flatness or dullness) and the suffix "-ously" (meaning in a manner of). The word describes something done in a flat or dull manner, often referring to statements that are unoriginal or lacking in depth.
Think of 'flatness' ('platitude') to remember that 'platitudinously' means in a dull or unoriginal way.