Earther

Earther or Earthling was used as a derogatory term for Humans in the 23rd century. The term Earthling was also used in 20th century science fiction as a term for Humans from Earth.

A young Spock was called "Earther" by his Vulcan playmates because he was half-Human. 

The Gorn captain referred to James Kirk as an "Earthling." 

Korax, a Klingon officer visiting Deep Space Station K-7 in 2267, referred to the Starfleet officers there as "Earthers." 

When Tom Paris was briefing Kathryn Janeway on the technology of The Adventures of Captain Proton, he told her to remember that it is a "ray gun, not phaser. Imagizer, not viewscreen. Earthlings, not Terrans."