[Petrosius]

Those who object to “-man” as a suffix are just showing their ignorance. “Man” comes from the German “mann” and just means “person” or “human.” This is the original, and still current, generic meaning of the word. The original English word for a male was “wer,” which has dropped out of the language except for the two words “werewolf” and “wergeld.”

[Verginius Rufus]

English "wer" is cognate with Latin vir meaning "man" (cf. English "virile"). Latin had the word homo used for a human being irrespective of sex. Greek also had different words for "man" in the sense of "male" and "man" in the sense of "human being."