fatuous

她那些愚蠢的评论让整个谈话变得毫无意义。

Her ___fatuous comments made the whole conversation pointless.

在整个纪律听证会上，他脸上一直挂着一副愚蠢的傻笑。

He kept a ___fatuous grin on his face throughout the entire disciplinary hearing.

委员会甚至没有进行正式投票就否决了这项提案，认为它是愚蠢的资源浪费。

The committee dismissed the proposal as a ___fatuous waste of resources without even a formal vote.