inefficacious(redirected from inefficacity)
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Not capable of producing a desired effect or result; ineffective.
failing to produce the desired effect
inefficacy, ˌineffiˈcaciousness, inefficacity n
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|Adj.||1.||inefficacious - lacking the power to produce a desired effect; "laws that are inefficacious in stopping crime"|
ineffective, ineffectual, uneffective - not producing an intended effect; "an ineffective teacher"; "ineffective legislation"
efficacious - marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"