foggy

1. ADJ When it is foggy, there is fog. 有雾的

It's quite foggy now. 现在雾很大。

2. PHRASE If you say that you haven't the foggiest or you haven't the foggiest idea, you are emphasizing that you do not know something. 压根儿不知道[非正式]

I did not have the foggiest idea what he meant. 我压根儿不知道他是什么意思。