supporter

US /səˈpɔːr.t̬ɚ/
UK /səˈpɔːr.t̬ɚ/
"supporter" picture
1.

a person who approves of and encourages someone or something (e.g., a public figure, a movement, a team) and gives them help and encouragement

:
She is a strong supporter of environmental protection.
The football team has many loyal supporters.
2.

a thing that supports something physically, especially from below

:
The old bridge needed additional supporters to prevent collapse.
The shelf was held up by two sturdy wooden supporters.