promulgate
🇺🇸
/ˈprɑːmlɡeɪt/
🇬🇧
/ˈprɒmlɡeɪt/
to share or spread an idea or belief to a lot of people
The organization aims to promulgate healthy eating habits among children.
to officially announce a new law or rule
The government will promulgate a new traffic safety regulation next month.