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• a  having great power or force or potency or effect
  the most powerful government in western Europe
  his powerful arms
  a powerful bomb
  the horse's powerful kick
  powerful drugs
  a powerful argument
• s  strong enough to knock down or overwhelm
• s  having great influence
• s  (of a person) possessing physical strength and weight; rugged and powerful
  powerful arms
• s  displaying superhuman strength or power
• r  (Southern regional intensive) very; to a great degree
  it is powerful humid
  that boy is powerful big now

• Still, the benefits of greater regional integration could prove powerful enough to overcome the roadblocks.
• E-Mail a Friend In 1997 a team of Japanese engineers dared to imagine a computer so powerful that it could keep track of everything in the world at once steaming rain forests .
• New research finds that if people feel powerful in their job, they're more competent at it.

• knock-down
• potent
• brawny
• hefty
• muscular
• sinewy
• herculean
• mighty
• mightily
• right

• powerless

News & Articles

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• Powerful storms headed toward city, suburbs; flooding possible
  Thunderstorms packing powerful wind gusts, large hail and heavy rain could hit the Chicago area this afternoon, according to the National Weather Service.        
  June 12, 2013 - Chicago Tribune
• Powerful Democrats endorse Gov. Christie in reelection bid
  Powerful democrats are endorsing New Jersey Governor Chris Christie in his bid for reelection. The list of ‘Christiecrats’ who are endorsing the Republican governor includes State Senator Brian Stack who has high praise for Christie.
  June 11, 2013 - WPIX 11 New York
• Powerful blast occurred outside Afghan Supreme Court
  A powerful blast rocked the heart of the Afghan capital of Kabul on Tuesday as government workers headed home from their jobs.
  June 11, 2013 - WJXT Jacksonville

Quotes

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• Barack Obama in American Muslim
  Obama noted that "the interests we share as human beings are far more powerful than the forces that drive us apart", and added that "there must be a sustained effort to listen to each other, to learn from each other, to respect one another...
• President Bush in Reuters
  President George W. Bush, a Republican with many opposing political views but who worked with Kennedy on a major education bill, called him a "man of tremendous courage, remarkable strength, and powerful spirit" and said: "We join our fellow...