monogamist

from WordNet (r) 3.0 (2006)
monogamist
    n 1: someone who practices monogamy (one spouse at a time) [syn:
         {monogamist}, {monogynist}]
from The Collaborative International Dictionary of English v.0.48
Monogamist \Mo*nog"a*mist\, n.
   One who practices or upholds monogamy. --Goldsmith.
   [1913 Webster]
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