Useful word alert!

Saw this in the Boris Johnson thing in New York summer double ish, natch ["It's a problem of affluence and acrasia, moral weakness"]:

Acrasia


A*cra"si*a\, Acrasy \Ac"ra*sy\n. [Gr. akrasia.] Excess; intemperance. [Obs. except in Med.] --Farindon.