proprieties

名词 propriety:

1. correct or appropriate behavior
   同义词：propriety, properness, correctitude

1. Her use of obscene language offends against the proprieties.
   她使用下流的语言是很失礼的事。
2. Be careful to observe the proprieties.
   注意遵守礼仪。
3. We should observe the proprieties.
   我们应该遵守礼节。