nonjoiner
noun
non·join·er
| \ ˌnän-ˈjȯi-nər
\
\
plural nonjoiners
Definition of nonjoiner
: one who does not become a member of an organization or is not given to joining many organizations
The problem is even more vexing since AARP is bent on attracting the most fractured collection of nonjoiners in history, the aging baby boomers.— Jeffrey H. Birnbaum
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