From pro- + shipper (“one who supports a romantic or sexual relationship between characters”). Some posit that the second sense originated as a blend of problematic + ship.
释义（英文）
名词Noun
(fandom slang) One who supports a specific ship or shipping in general. [since 1996]
(fandom slang) One who supports a ship or shipping deemed problematic (e.g., due to incest, age differences, abusive dynamics, etc.), and/or believes in the freedom to create and consume fanworks with such elements. [since 2010s]