plat·i·tu·di·nar·i·an /-ˌtudṇˈɛriən, ˌtju-/
說陳詞濫調的人(a.)平凡的,陳腐的
Plat·i·tu·di·na·ri·an n. One addicted to uttering platitudes, or stale and insipid truisms. “A political platitudinarian.”
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platitudinarian
n : a bore who makes excessive use of platitudes