half-baked

a half-baked idea

不成熟的想法

牛津词典

I didn't want to make things worse by coming up with half-baked notions.

我可不想一拍脑门想出些馊主意而把事情搞得更糟。

This is another half-baked scheme that isn't going to work...

这又是一个不靠谱的计划，是不会成功的。