From Earth +‎ man.

• (Received Pronunciation) IPA^(key): /ˈɜːθˌmæn/, /ˈɜːθ.mən/
• (General American) IPA^(key): /ˈɝθˌmæn/, /ˈɝθ.mən/

Earthman (plural Earthmen)

1. (usually science fiction) A male inhabitant of Earth.

   Coordinate terms: Earthgirl, Earthwoman

   • 1928, Edgar Rice Burroughs, The Master Mind of Mars, page 2:

     Such dreams! Always of Mars, and during my waking hours at night my eyes always sought out the Red Planet when he was above the horizon and clung there seeking a solution of the seemingly unfathomable riddle he has presented to the Earthman for ages.

• Earther, Earthling, for more see Thesaurus:Earthling

• Jeff Prucher, editor (2007), “Earthman”, in Brave New Words: The Oxford Dictionary of Science Fiction, Oxford, Oxfordshire; New York, N.Y.: Oxford University Press, →ISBN, page 46.
• Jesse Sheidlower, editor (2001–2026), “earthman n.”, in Historical Dictionary of Science Fiction.

• heartman, manhater