Definition of permissivist in US English:

permissivist

noun

derogatory
  • A tolerant or permissive person; an advocate of permissive attitudes, especially in sexual matters.

Origin

1960s; earliest use found in Benjamin Spock (1903–1998), pediatrician and activist. From permissive + -ist, after permissivism.

Pronunciation

permissivist

/pəˈmɪsɪvɪst/