[noun] [U]In a famous speech, she attributed the social and economic problems of the 1980s to the permissiveness of the 1960s.He remembers the 1960s as being an era of sexual permissiveness (= a period in which there was a great amount of sexual freedom).
PERMISSIVENESS
Meaning of PERMISSIVENESS in English
Cambridge English vocab. Кембриджский английский словарь. 2012