upholder
/ˈʌphəldər/Definitions
1. noun
a person or thing that supports or maintains something, especially a person who supports a cause or principle
“The community organizer was an upholder of social justice in the city.”
2. noun
a piece of furniture, typically a chair or a stool, that provides support or sustains something
“The upholder of the throne was a beautifully crafted chair with intricate carvings.”
3. verb
to support or maintain something, especially a cause or principle
“She upheld the rights of the marginalized community throughout her career.”