The Collaborative International Dictionary of English v.0.48:

Infertility \In`fer*til"i*ty\, n. [L. infertilitas: cf. F.
   infertilit['e].]
   The state or quality of being infertile; unproductiveness;
   barrenness.
   [1913 Webster]

         The infertility or noxiousness of the soil. --Sir M.
                                                  Hale.
   [1913 Webster]

WordNet (r) 3.0 (2006):

infertility
    n 1: the state of being unable to produce offspring; in a woman
         it is an inability to conceive; in a man it is an inability
         to impregnate [syn: sterility, infertility] [ant:
         fecundity, fertility]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "infertility":
   aridity, aridness, barrenness, birth control, contraception,
   dearth, dearth of ideas, dry womb, dryness, dullness,
   family planning, famine, impotence, ineffectualness, infecundity,
   planned parenthood, prosaicism, prosaicness, prosaism, prosiness,
   staidness, sterileness, sterility, stolidity, stuffiness,
   uncreativeness, unfancifulness, unfertileness, unfruitfulness,
   unimaginativeness, unoriginality, unpoeticalness, unproductiveness,
   withered loins