IPA: //plætɪˈtjuːdɪnaɪz//
KK: /plætɪˈtudɪˌnaɪz/
To speak or write in a way that uses overused or clichéd phrases, often lacking originality or depth.
During the meeting, he tended to platitudinize instead of offering any real insights.
Platitudinize → It is formed from "platitude" (from French *platitude*, meaning flatness or dullness) and "-ize" (a suffix meaning to make or to cause to become). The word means to make something flat or dull, often referring to the act of stating a cliché or a banal remark.
Think of 'platitude' meaning something flat or dull, and remember that 'platitudinize' means to make a statement that is flat or lacking in originality.