propriety
noun uk/prəˈpraɪə.ti/ us/prəˈpraɪə.t̬i/
[ U ] formal（行为）端正，得体，合宜
correct moral behaviour or actions
The director insisted that there was no question as to the propriety of how the funds were raised. 经理坚持说集资方式是完全正当的。
She was careful always to behave with propriety. 她时刻注意行为得体。
proprieties [ plural ] formal 礼仪，礼节
the rules of polite social behaviour
observe the proprieties They'd invited us to dinner so we thought we'd better observe the proprieties and invite them back. 他们请了我们吃饭，所以我们认为最好遵循礼数回请他们。
He had no time for stuffy upper-crust social proprieties.
My childhood home was a place of unshakable proprieties - if you swore, your mouth would be washed out with soap.
Amy taunted her friend, challenging her to overcome her middle-class proprieties.
The novel is excellent in its portrayal of small-town proprieties.