prim

拘謹的、一本正經的、古板的多含貶義

She gave me a prim smile and changed the subject.

她拘謹地笑了一下，就把話題轉開了。

整潔的、端正的、一絲不苟的

He wore a prim gray suit and polished black shoes.

他穿著整潔的灰色西裝和擦得發亮的黑皮鞋。

규規矩矩、循規蹈矩、一本正經口語

Her parents are so prim and proper about table manners.

她父母對餐桌禮儀非常一板一眼。