One who's views are at odds with those of their own species.
Two zebras share the latest gossip; "Can you believe that frickin' race traitor Charlene? Everyone knows a white zebra with black stripes can never marry a black zebra with white stripes. What was she thinking?!"

Two humans being sold at the Andromeda slave auction comment on their human captors;

"Can you believe these frickin' jerks are selling us off to some random rich lizard people?"

"I know, right?! These freakin' race traders in space are a buncha lowdown, dirty space race traitors!"
by Der Höhepunkt June 11, 2023
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