permissiveness 

英汉解释

n. 放任；许可

同义词

n. tolerance

反义词

n.   restrictiveness，unpermissiveness

参考例句

1. Does parental permissiveness affect children's development?
父母放任会影响孩子的发展吗？
2. Populism in recent years has been mostly a phenomenon of the right, arrayed against big government, taxes and social permissiveness.
近几年民粹主义右派表现杰出，他们集合起来反对大政府，税收和社会的放任。
3. Given the permissiveness to experiment, the prolonged schooling available, and the moratoria allowed, it is not unusual for an adventurer to be nearly 30 before firmly setting a course.
如果允许他进行尝试，可以继续在学校深造，这样的延期条件下一个近三十岁的人还没有确立好自己的人生道路是一件很平常的事。

英英解释

n.
  1. a disposition to allow freedom of choice and behavior

网络释义

permissiveness
放任; 性允诺; 纵容态度; 姑息态度;
Sex permissiveness
性开放; 性关闭;
permissiveness action
允许作用;
excessive permissiveness
过度宠爱;
parental permissiveness
父母纵容; 家长的过分宽容; 家长的宽容;