What Is Folie à Deux? Meaning of ‘Joker’ Sequel Subtitle

As of now, the working title for the highly-anticipated sequel is Joker: Folie à Deux.

And, as expected, fans grew curious about the subtitle’s meaning. So, if you’re eager to know what “Folie à deux” means, stick around as we translate it and reveal the pronunciation of the foreign phrase.

Source: https://www.distractify.com/p/joker-folie-a-deux-meaning