inane

1. ADJ If you describe someone's behaviour or actions as inane, you think they are very silly or stupid. 很傻的; 愚蠢的[ADV after v] [表不满]

He always had this inane grin. 他总是傻傻地咧嘴笑。

2. inanelyADV

He lurched through the bar, smiling inanely. 他傻乎乎地微笑着，踉踉跄跄地穿过了那个酒吧间。