nonmember

from WordNet (r) 3.0 (2006)
nonmember
    n 1: a person who is not a member [ant: {fellow member},
         {member}]
    
from The Collaborative International Dictionary of English v.0.48
Nonmember \Non*mem"ber\, n.
   One who is not a member; as, nonmembers are not allowed in
   the club reading room.
   [1913 Webster +PJC]
    

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