Adjective : The medicine is efficacious in stopping a cough.    From Dictionary.com. 

When I thus praise the efficaciousness of toil, I do not speak only of manual labor.    From Wordnik.com.  [International Miscellany of Literature, Art and Science, Vol. 1, No. 3, Oct. 1, 1850] Reference

It is out of conceptual rigour — and against the grain of a potential popularity and perhaps even efficaciousness — that.    From Wordnik.com.  [History against Historicism, Formal Matters, and the Event of the Text: De Man with Benjamin] Reference

Interestingly enough, from this claim concerning the necessary efficaciousness of divine volition, Malebranche immediately infers.    From Wordnik.com.  [Occasionalism] Reference

What Malebranche needs to establish, then, is the claim that causation just is necessary efficaciousness, and the pressing question for Malebranche is how he can defend this claim.    From Wordnik.com.  [Occasionalism] Reference

The cold formality and dread-inducing, proto-Nurse-Ratched efficaciousness of this convocation affords a chilling counterbalance to the vulnerability implied in the prisoner portraits.    From Wordnik.com.  [ArtScene: This Week's Top Exhibitions in the Western U.S. (August 17-21, 2010)] Reference

Many a theist would grant that creaturely causes lack necessary efficaciousness on the very grounds that Malebranche had presented, but still argue that this does not mean that they lack causal powers.    From Wordnik.com.  [Occasionalism] Reference

If you believe in the efficaciousness of government spending then you should believe in balanced budgets because that mode of behaviour provides government with a fiscal reserve to activate during periods of economic downturn.    From Wordnik.com.  [Lessons from Current Miseries] Reference

Spiritual purity shown through the efficaciousness of the will, 684-l.    From Wordnik.com.  [Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry] Reference

Proactol is risk-free and time-tested with documented validation of its efficaciousness.    From Wordnik.com.  [MyLinkVault Newest Links] Reference

And he shows the efficaciousness of spending on food stamps and other resources for poor folks.    From Wordnik.com.  [My Left Wing - Front Page] Reference

To certain the efficaciousness of your hauteur conditioner, routinely succeed or clean the filters.    From Wordnik.com.  [Article directories Celibataire Urbaine] Reference

Learn, then, that I am the inventor of the Vermifuge Balsam, whose sovereign efficaciousness is indisputable.    From Wordnik.com.  [Memoirs of Robert-Houdin]

Therefore when he works the work of conversion, he does it in a sweet manner, though it is mighty for the efficaciousness of it.    From Wordnik.com.  [the blue fish project (dave bish)] Reference

A faith in the efficaciousness of the behavioral and social sciences and the melding of those with genetics is endemic to the left.    From Wordnik.com.  [feminist blogs] Reference

The success of capitalism is assured not because of its efficaciousness as an economic system, but its accuracy as a description of human nature.    From Wordnik.com.  [SeekingAlpha.com: Home Page] Reference

The "Réflexions morales" of Quesnel reproduced, in fact, the theories of the irresistible efficaciousness of grace and the limitations of God's will with regard to the salvation of men.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 8: Infamy-Lapparent] Reference

The varying mental and magnetic qualities of prescribers have undoubtedly much to do with the varying degrees of efficaciousness of the same remedy when administered by different physicians.    From Wordnik.com.  [Nature Cure] Reference

Another benefit of the present book is that it attempts to demonstrate the viability, efficaciousness, and, yes, morality, of the private-enterprise system, addressing a difficult case in point.    From Wordnik.com.  [Mises Dailies] Reference

This necessity of ceaselessly varying one's language in accordance with the effect produced at the moment of speaking deprives from the outset a prepared and studied harangue of all efficaciousness.    From Wordnik.com.  [The Crowd: A Study of the Popular Mind] Reference

That practice has only served to undermine both the efficaciousness and the reputation of "consensus" in Lebanon's model of asterisk democracy, leading all sides to use it as blackmail against one another.    From Wordnik.com.  [The Daily Star > News Feed] Reference

In corporal punishments, it is true, there would be a certain gain of efficaciousness, particularly against such hardened offenders as the born criminals, so that there is a reaction in favour of these punishments.    From Wordnik.com.  [Criminal Sociology] Reference

He only indeed who is qualified for the sacrifice is qualified for the meditation, since the latter aims at greater efficaciousness of the sacrifice; but this does not imply that the meditation necessarily goes with the sacrifice.    From Wordnik.com.  [The Vedanta-Sutras with the Commentary by Ramanuja — Sacred Books of the East, Volume 48] Reference

In all directions our habitual courses of action seem to be losing efficaciousness, credit, and control, both with others and even with ourselves; everywhere we see the beginnings of confusion, and we want a clue to some sound order and authority.    From Wordnik.com.  [Culture and Anarchy] Reference

He does not exclude the will, but all efficaciousness and operation of the same. ".    From Wordnik.com.  [Historical Introductions to the Symbolical Books of the Evangelical Lutheran Church] Reference

But that doesn’t tell me anything about accuracy or efficaciousness of treatment.    From Wordnik.com.  [Mishegaas | Jewschool] Reference

"If anything can, then this will, for I took it from Theleb K'aarna's own demon and that must improve the efficaciousness of the magic.    From Wordnik.com.  [The Vanishing Tower]

It is good to see Hillary, and anyone else, celebrating the life of MLK, but many of us will not soon forget when she tried to trivialize Obama’s efficaciousness by comparing him to MLK.    From Wordnik.com.  [Clinton Celebrates MLK Jr. Legacy - The Caucus Blog - NYTimes.com] Reference

"The purity of the spirit," says Van Helmont, "is shown through energy and efficaciousness of will.    From Wordnik.com.  [Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry] Reference

(kengyô) and demonstrates its validity and efficaciousness; and 2) the practical (jissô), which prescribes his method of meditation and ritual.    From Wordnik.com.  [Laughter] Reference