foggy
adjective uk/ˈfɒɡ.i/ us/ˈfɑː.ɡi/
(WEATHER)
A2 有雾的
with fog
a cold, foggy day 寒冷起雾的一天
Idiom
not have the foggiest (idea)idiom informal 完全不明白；一无所知；茫无头绪
to not know or understand something at all
I didn't have the foggiest idea what he was talking about. 我完全不明白他在讲什么。