Is good evening sirs appropriate English?

"Good evening sirs" is grammatically correct, but it's not the most common or natural way to greet a group of men in English.

Here's why:

* Formal: "Good evening sirs" is very formal and might sound overly stiff or even outdated.

* Gendered: It emphasizes the gender of the recipients, which can feel outdated and potentially exclusionary.

* Alternatives: There are more natural and inclusive ways to greet a group of men, such as:

* "Good evening, gentlemen"

* "Good evening, everyone"

* "Good evening"

Overall: While technically correct, "Good evening sirs" is not recommended for everyday use. Choosing a more natural and inclusive greeting is generally a better choice.