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• a  producing or capable of producing an intended result or having a striking effect
  his complaint proved to be effectual in bringing action
• s  having legal efficacy or force

• Lacking an organized, effectual medium through which to voice their protests, dissenters ranging from Maoists to hippies, from middle-aged suburbanites in SANE to adolescent .
• Said Thomas Jefferson: "We have given one effectual check to the dog of war by transferring the power of letting him loose from those who are to spend to those who are to pay.
• Declared the Commission: "So long as State co-operation is required to make the Amendment effectual, adverse public opinion in some states and lukewarm public opinion in others .

• effective
• efficacious
• legal
• sound

• ineffective

News & Articles

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• ResMan® Residential Management Software and Spherexx.com® Integrate Property Management Services to Expand Functionality
  Cloud-based accounting software provider and software innovator team up for effectual implementation. (PRWeb October 31, 2013) Read the full story at http://www.prweb.com/releases/2013/11/prweb11292828.htm
  Nov. 1, 2013 - PRWeb

Quotes

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• James Madison in New York Times
  But the Democrats made clear today that they would try again to change course by using the power of the purse - what James Madison called "the most complete and effectual weapon with which any constitution can arm the immediate representatives of...
• Daniel Webster in NewsWithViews.com
  Daniel Webster warned, "Of all the contrivances for cheating the laboring classes of mankind, none has been more effectual than that which deludes them with paper money."
• Mahmoud Ahmadinejad in Xinhua
  Changes can happen in two ways. One is a fundamental and effectual change and the other is a change of tactics,Ahmadinejad told a rally in the western Iranian city of Khermenshah, which was broadcast on state television.