[syn: sufficiency, adequacy]
The Collaborative International Dictionary of English v.0.48:
Adequacy \Ad"e*qua*cy\, n. [See Adequate.]
   The state or quality of being adequate, proportionate, or
   sufficient; a sufficiency for a particular purpose; as, the
   adequacy of supply to the expenditure.
   [1913 Webster]
WordNet (r) 3.0 (2006):
adequacy
    n 1: the quality of being able to meet a need satisfactorily:
         "he questioned the adequacy of the usual sentimental
         interpretation of the Golden Rule" [syn: adequacy,
         adequateness] [ant: inadequacy, inadequateness]
    2: the quality of being sufficient for the end in view; "he
       questioned the sufficiency of human intelligence" [syn:
       sufficiency, adequacy] [ant: deficiency, inadequacy,
       insufficiency]