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efficacious
used in a sentence

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Definition effective in producing an intended effect
  • The drug is safe and efficacious.
efficacious = effective in producing an intended effect
  • You'll find it most efficacious.
    Margaret Craven  --  I Heard the Owl Call My Name
  • efficacious = effective in producing an intended effect
  • His naked fangs and writhing lips were uniformly efficacious, rarely failing to send a bellowing on-rushing dog back on its haunches.
    Jack London  --  White Fang
  • efficacious = effective in producing an intended effect
  • Indeed, all the treatments the doctors had tentatively employed, without definite results, now seemed almost uniformly efficacious.
    Albert Camus  --  The Plague
  • efficacious = effective in producing an intended effect
  • He would weep for hours together, and I verily believe that to the very end this spoiled child of life thought his weak tears in some way efficacious.
    H.G. Wells  --  The War of the Worlds
  • efficacious = effective in producing an intended effect
  • And one of the most efficacious remedies that a prince can have against conspiracies is not to be hated and despised by the people,
    Nicolo Machiavelli  --  The Prince
  • efficacious = effective in producing an intended effect
  • It is often an indication as to whether or not the procedure will be efficacious.
    Margaret Atwood  --  Alias Grace
  • efficacious = effective in producing an intended effect
  • over the years it turned out ... that that most efficacious medicine for whatever ailed him would be cash or credit, the larger the dosage the better.
    John Hersey  --  Hiroshima
  • efficacious = effective in producing an intended effect
  • I saw that we must apply some more efficacious remedy, and sent the boys for a chest of signal-rockets we had brought from the wreck.
    Johann Wyss  --  The Swiss Family Robinson
  • efficacious = effective in producing an intended effect
  • ...yet she had never found it less efficacious.
    E.M. Forster  --  A Passage to India
  • efficacious = effective in producing an intended effect
  • "I do thank you for taking the time, Pomona," Slughorn was saying courteously, "most authorities agree that they are at their most efficacious if picked at twilight."
    J.K. Rowling  --  Harry Potter and the Half-Blood Prince
  • efficacious = effective in producing an intended effect
  • And considering the eagerness with which such information is sought by them, and the extent of your reputation, I do not know of a more efficacious advertisement than your biography would give.
    Benjamin Franklin  --  The Autobiography of Benjamin Franklin
  • efficacious = effective in producing an intended effect
  • These plants are most efficacious in the inflaming of the brain, and are therefore much used in Confusing and Befuddlement Draughts, where the wizard is desirous of producing hot-headedness and recklessness...
    J.K. Rowling  --  Harry Potter and the Order of the Phoenix
  • efficacious = effective in producing an intended effect
  • Doubt not that it will be as efficacious against those of Rappaccini.
    Nathaniel Hawthorne  --  Rappaccini's Daughter
  • Undoubtedly it was as good a thing as you could do; though I question if some other oils would not have been equally efficacious.
    Thomas Hardy  --  The Return of the Native
  • Only two and threepence a box—warranted efficacious by the Government stamp.
    Thomas Hardy  --  Jude the Obscure
  • That was sure, efficacious, and free from danger.
    Victor Hugo  --  Les Miserables
  • You follow the world, my young friend, and I tremble lest grace prove not efficacious.
    Alexandre Dumas  --  The Three Musketeers
  • If this was an efficacious process for the training of men, I wanted no part of manhood, I was perfectly content with being a boy.
    Pat Conroy  --  The Lords of Discipline
  • This is the essential, and, after all, only efficacious security for the rights and privileges of the people, which is attainable in civil society.
    Alexander Hamilton, James Madison, & John Jay  --  The Federalist Papers

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