Sample Sentences for
efficacy
(editor-reviewed)

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    But questions about the painlessness and efficacy of lethal injection were emerging.†  (source)
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    In psychology this belief is called self-efficacy.†  (source)
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    There was relief all around, but soon the thread had been overtaken by a multi-participant debate about the efficacy of that war, U.S. foreign policy in general, whether or not we won in Vietnam or Grenada or even WWI, and the ability of the Afghans to self-govern, and the opium trade financing the insurgents, and the possibility of legalization of any and all illicit drugs in America and Europe.†  (source)
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    It's true that the American public is unduly impressed by such notions — they favour cures that can be had by pulling a lever or pressing a button — but Simon has no belief in their efficacy.†  (source)
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    Supposing this person, wearied at the inefficacy of the poison, should, as Monte Cristo intimated, have recourse to steel!†  (source)
    standard prefix: The prefix "in-" in inefficacy means not and reverses the meaning of efficacy. This is the same pattern you see in words like invisible, incomplete, and insecure.
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    I wonder who first discovered the efficacy of poetry in driving away love!†  (source)
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    "Without expecting any thanks, or anything of the sort," resumed Camilla, "I have remained in that state, hours and hours, and Raymond is a witness of the extent to which I have choked, and what the total inefficacy of ginger has been, and I have been heard at the piano-forte tuner's across the street, where the poor mistaken children have even supposed it to be pigeons cooing at a distance,—and now to be told—" Here Camilla put her hand to her throat, and began to be quite chemical as to the formation of new combinations there.†  (source)
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    The evil side of my nature, to which I had now transferred the stamping efficacy, was less robust and less developed than the good which I had just deposed.†  (source)
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    To the People of the State of New York: AFTER an unequivocal experience of the inefficacy of the subsisting federal government, you are called upon to deliberate on a new Constitution for the United States of America.†  (source)
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    I have never believed in the efficacy of idealists-have you?†  (source)
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    This censorial body, therefore, proves at the same time, by its researches, the existence of the disease, and by its example, the inefficacy of the remedy.†  (source)
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    It is also the severest test of its efficacy, its credibility.†  (source)
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    No one doubted that the sanitary rigor of Dr. Juvenal Urbino, more than the efficacy of his pronouncements, had made the miracle possible.†  (source)
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