supporter
nounUK /səˈpɔːtə/
US /səˈpɔːrtər/
A supporter is someone who helps or cheers for a person or team.
My dad is a big supporter of our school football team.
OTHER MEANINGS
2. A thing that holds something up so it does not fall.
The supporter under the shelf keeps it from falling down.
3. A person who gives money or help to a group or cause.
She is a supporter of the animal shelter and gives money every month.
4. A band or strap worn to hold part of the body in place.
He wears a knee supporter when he plays basketball.