Monogamous

from WordNet (r) 3.0 (2006)

monogamous
    adj 1: (used of relationships and of individuals) having one
           mate; "monogamous marriage"; "monogamous for life" [ant:
           {polygamous}]

from The Collaborative International Dictionary of English v.0.48

Monogamous \Mo*nog"a*mous\, a. [L. monogamus having but one
   wife, Gr. ?; mo`nos single + ? marriage.]
   1. Upholding, or practicing, monogamy.
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   2. (Bot.) Same as {Monogamian}.
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   3. (Zool.) Mating with but one of the opposite sex; -- said
      of birds and mammals.
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