In Engpsh, the word for a man or gentleman is "man" or "gentleman." It can be written as "man" or "gentleman," depending on the context in which it is being used. For example:

"That man over there is a doctor."
"The gentleman in the suit is the CEO of the company."

Note that "man" can also be used as a general term to refer to all human beings, regardless of gender. For example:

"Man has always been fascinated by the stars." (This sentence means "human beings" in general, not just men.)

If you want to specifically refer to men as a group, you can use the word "men." For example:

"Men and women both have the right to vote."

If you want to refer to a man in a formal or popte way, you can use the word "sir." For example:

"Can I help you, sir?"

If you are writing a formal document and want to refer to a man in a formal way, you can use the title "Mr." followed by his last name. For example:

"Mr. Smith is a respected member of the community."

I hope this helps! If you have any more questions, please don't hesitate to ask.