失礼的英文：
discourteously
discourteousness
disrespect
faux pas
liberty
sin
solecism

参考例句：

It was uncivil of you to say that.
你说那种话很失礼.

We consider it very impolite to tell people when they have committed some social faux pas.
我们认为当他人失礼时，告诉他这些是很不礼貌的。

A clumsy mistake,especially one made in public; a faux pas.
过失当众犯的有失体面的错误；失礼

The manner in which she received him was calculated to a nicety to seem cool without being uncivil.
她接待他时始终准确地把握好分寸,看似冷淡,却不失礼。

an indelicate suggestion.
失礼的提议。

commit an indecorum
作了一桩失礼的事

A breach of propriety
无礼[失礼](的行为)

indecorous behavior
失礼的行为indecorously

Please forgive me for being impolite.
请原谅我的失礼。

He was unspeakably impolite.
他极为失礼。

discourteously是什么意思：
ad. 失礼,无礼地

Never treat your [my...] friend discourteously and dishonestly
切莫慢待朋友。

discourteousness是什么意思：
n. 失礼;无礼

Never treat your [my...] friend discourteously and dishonestly
切莫慢待朋友。

disrespect是什么意思：
n. 不敬，无礼，失礼
v. 不尊重，不尊敬，无礼对待

There was nothing disrespectful in the call.
这种称呼并没有不尊敬的意思。

No disrespect, but I think you are wrong.
我没有别的意思，只不过认为你错了。

I meant no disrespect for your traditions.
我并无蔑视你们传统的意思。