HyperDic: inefficacy

English > 1 sense of the word *inefficacy*:
NOUN	attribute	inefficacy, inefficaciousness	a lack of efficacy

English > *inefficacy*: 1 sense > noun 1, attribute
Meaning	A lack of efficacy.
Synonym	inefficaciousness
Broader	ineffectiveness, ineffectualness, ineffectuality	lacking the power to be effective
Opposite	efficacy, efficaciousness	Capacity or power to produce a desired effect