If someone is clueless, they do not understand what is going on — and the speaker is not being kind about it.

If someone is如果有人 clueless狀況外， they do not understand就是不懂 what is going on發生了什麼事 — and而且 the speaker說話的人 is not being kind about it講這句話並不是要客氣

It is stronger than a plain “I don’t know.” It often means “you have not even started to see the point,” or “you are living in another world.” Parents say it about teenagers; workers say it about a boss who never asks; friends say it with a laugh, but it can still sting. You can be clueless about one thing (“clueless about money”) or clueless in a wider way.

It它 than比 a plain 'I don't know.'一句平淡的「我不知道」 is stronger更強。It它 often means常常是說 “you have not even started to see the point,”「你根本連重點在哪都還沒抓到」 or或是 “you are living in another world.”「你活在另一個世界」。Parents父母 say it about teenagers會用來說青少年; workers員工 say it about a boss who never asks會用來說從來不過問的老闆; friends朋友 say it with a laugh會笑著這樣說, but but it can still sting還是會刺人。You你 can be clueless about one thing可以只在某件事上狀況外 (“clueless about money”)（像金錢方面很狀況外） or或是 clueless in a wider way在更大範圍上狀況外。

Informal. The softer version is “doesn’t have a clue.” Calling a person clueless usually shows you are tired of their not knowing, or you think they should know.

Informal口語用法。The softer version更委婉的說法 is是 “doesn't have a clue.”「沒概念」。Calling a person clueless說一個人狀況外 usually shows通常表示 you你 are tired of their not knowing受夠了他們的不懂, or或 you你 think覺得 they should know他們應該要懂。