auxiliate
/ɔːˈsɪliːeɪt/ or /ɔːˈsɪljɛt/Definitions
1. verb
to provide or support something, especially a person or a project, with the resources needed to achieve or maintain it
“The foundation will auxiliate the local arts program to help it continue its efforts.”
2. noun
a person or organization that provides financial or other support to something, especially a person or a project
“The auxiliates of the charity helped to raise funds for the new building.”