How feminist writer Kate Swift created her own Newspeak Dictionary and helped ruin everyday English. If you’ve ever felt a twinge of anxiety at hearing someone use “humankind” as a substitute for mankind, or if you’ve winced at the proliferation of the politically correct suffix “person” — as in “chairperson,” or “policeperson” — when the more traditional “man” would be perfectly suitable, chances are you’ve suffered from the corrupting linguistic legacy of feminist writer Kate Swift. Swift, who died last week at 87, was one of a squadron of feminist language police whose crusade to remake language to suit their...