polygynist

from WordNet (r) 3.0 (2006)
polygynist
    n 1: a man with two or more wives
    
from The Collaborative International Dictionary of English v.0.48
Polygynist \Po*lyg"y*nist\, n.
   One who practices or advocates polygyny. --H. Spenser.
   [1913 Webster]
    

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