nonmember
noun
non·mem·ber ˌnän-ˈmem-bər 
plural nonmembers
: a person or thing that is not a member
The event is open to nonmembers as well.
Admission is $15 for nonmembers.
—often used before another noun nonmember nationsnonmember prices
Word History
First Known Use
1635, in the meaning defined above