mannerlessly

[Pidginboy]

"Sorry, Sir, yesterday I behaved mannerlessly with you."

Please give a correct and idiomatic version of the above sentence. Thanks in advance.

 

[Michel09]

It means behaving without manners, or impolitely

"Sorry, sir, yesterday I behaved poorly and without manners towards you."

 

[FurryOne]

Sorry, sir, yesterday I behaved poorly and without manners towards you.

Sounds a bit off. How about:

Sorry, sir, yesterday I was impolite to you.

 

[JamesM]

I think you could also say or write:

I apologize for my poor/bad manners yesterday.

I apologize for behaving badly/poorly towards you yesterday.

I'm sorry for treating you badly/poorly yesterday.