foggier
adj. 有雾的( foggy的比较级 ); 雾气朦胧的; 模糊的; 混乱的
When it is foggy, there is fog.
It's quite foggy now...
现在雾很大。
Conditions were damp and foggy after morning sleet.
早上的雨夹雪过后天气潮湿多雾。
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.
I did not have the foggiest idea what he meant...
我根本不知道他是什么意思。
'How often does it need to be changed?' — 'Haven't the foggiest.'
“大概要多久换一次呢?”——“我一点儿概念也没有。”