Nonmembers rhymes with:
member's, members, members', remembers, december's, embers, member's, members, members', november's, remembers, september's
Nonmembers sounds like:
nabers, nabors, nebraska, nebraska's, nefarious, neiberg, nephrosis, neuburg, nevarach, nevarach's, nevarez, nevers, newberg, newbrough, newburg, newburgh, newbury's, nobrega, nobriga, nonferrous, noverco, npr's, npr.org, number's, numbers, nyberg, nyborg