Platitudinous
/ˌplætɪˈtuːdənəs/
Definition 1 of 1
Pro Tip 1/3Uninspiring Speeches
Often used to describe speeches that fail to evoke interest or thought due to lack of originality. 
The mayor's platitudinous remarks on city policy barely kept the audience awake.
Pro Tip 2/3Negative Connotation
'Platitudinous' usually implies a negative opinion about the content being discussed. 
His book was full of platitudinous observations that contributed little to the topic.
Pro Tip 3/3Overused Phrases
Platitudinous expressions are overused to the point of losing their impact. 
Her platitudinous 'good things come to those who wait' didn't help the situation.