Definitions

1. noun

A person who petitions or pleads for something, especially a saint’s canonization.

“The postulator of the saint’s cause had to gather evidence to support her sainthood.”

2. noun

A person who advocates or pleads for a particular cause or interest.

“The postulator for the local charity helped raise funds and awareness for the community.”

3. verb

To advocate or plead for something, especially a cause or interest.

“The activist decided to postulate for the rights of marginalized groups.”