platitude

1. N-COUNT A platitude is a statement that is considered meaningless and boring because it has been made many times before in similar situations. 陈词滥调[表不满]

Why couldn't he say something vital and original instead of just spouting the same old platitudes?

他为什么不能说点重要的、有新意的东西，而不只是喋喋不休地讲些陈词滥调呢？