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Google n-grams has "sexual perversion," "neurosis" and "psychosis" all picking up between 1860 and 1900, i.e. as psychoanalysis was picking up steam. Most likel

Google n-grams has "sexual perversion," "neurosis" and "psychosis" all picking up between 1860 and 1900, i.e. as psychoanalysis was picking up steam. Most likely they got there first. Interestingly, the frequency of "perversion" was steady through that period, so in this case the psychoanalysts did attach a new meaning to an existing word ("the alteration of something from its original course").

DonHopkins 7y ago
There was a huge spike of "prevert" from 1989 to 1995! What an exciting time that was to be alive. But I wonder what fun I missed out on during the Great Prevert Spike Of 1807 -- that looks like it was quite a party. https://books.google.com/ngrams/graph?content=prevert&year_start=1800&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t1%3B%2Cprevert%3B%2Cc0#t1%3B%2Cprevert%3B%2Cc0 https://books.google.com/ngrams/graph?content=prevert&year_s... https://www.youtube.com/watch?v=ud9zBKJJQe4 https://www.youtube.com/watch?v=ud9zBKJJQe4