noun. The state or quality of being incapable of producing a desired effect or result.

noun. Lack of efficacy or power to produce the desired effect; ineffectualness; failure of effect.

noun. Lack of power to produce the desired or proper effect; inefficiency; ineffectualness; futility; uselessness; fruitlessness.

noun. The condition of being ineffective

noun. a lack of efficacy

"Of force, the inefficacy has been already tried; since the Latins have subdued the empire, without subduing the minds, of the Greeks."

ineffectiveness  ineffectuality  ineffectualness  

abnegation  absenteeism  backache  backsliding  bedlam  

fruitlessness  futility  ineffectualness  inefficiency  uselessness