inefficacy

inefficacy
    n 1: a lack of efficacy [syn: {inefficacy}, {inefficaciousness}]
         [ant: {efficaciousness}, {efficacy}]
    

Inefficacy \In*ef"fi*ca*cy\, n. [L. inefficacia. See {In-} not,
   and {Efficacy}.]
   Lack of power to produce the desired or proper effect;
   inefficiency; ineffectualness; futility; uselessness;
   fruitlessness; as, the inefficacy of medicines or means.
   [1913 Webster]

         The seeming inefficacy of censures.      --Bp. Hall.
   [1913 Webster]

         The inefficacy was soon proved, like that of many
         similar medicines.                       --James
                                                  Gregory.
   [1913 Webster]