inanity
n. 空洞; 浅薄; 愚蠢; 空洞的言行
If you describe someone's behaviour or actions as inane, you think they are very silly or stupid.
He always had this inane grin...
他总是这样傻傻地咧嘴笑。
She started asking me inane questions.
她开始问我愚蠢的问题。
1. total lack of meaning or ideas
I laugh all alone at my complete inanity.
十分无聊时,我就独自大笑.