Found 2 items, similar to inefficacy.
English → English (WordNet) Definition: inefficacy inefficacy n : a lack of efficacy [syn: inefficaciousness] [ant: efficacy]
English → English (gcide) Definition: Inefficacy 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]