Search Result for "inefficaciousness": 
Wordnet 3.0

NOUN (1)

1. a lack of efficacy;
[syn: inefficacy, inefficaciousness]



The Collaborative International Dictionary of English v.0.48:

Inefficaciousness \In*ef`fi*ca"cious*ness\, n.
   Lack of effect, or of power to produce the effect;
   inefficacy.
   [1913 Webster]


WordNet (r) 3.0 (2006):

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