societarian
/səˌsʌɪəˈtɛːrɪən/adjective
Of or relating to society or social problems.
noun
A person who believes in or advocates societarianism.
Origin
Mid 18th century (in an earlier sense). From societ- + -arian. Compare French sociétaire (adjective) of or relating to society, (noun) member of a learned society, or commercial society, political society, company of actors, literary or musical society, etc.