---

• v  make worse or less effective
  His vision was impaired
• v  make imperfect

• I can't hear him either; stress can impair hearing as well.
• Mark Fillmore, a psychologist at the University of Kentucky, has found that study volunteers who are warned that an alcoholic drink will highly impair their performance on a .
• Drinking has not been scientifically proved to stimulate appetite, but too much beer, wine or liquor can impair judgment, causing us to eat more.

• mar
• spoil
• deflower
• vitiate

News & Articles

---

• NSA cyber spying on China not a surprise, but it's not ho-hum, either (+video)
  NSA chief says leaks about US cyber spying on China, and techniques for doing it, will impair intelligence-gathering. Others play that down, saying the more significant hit will be to relations with China and to US global work on behalf of a free and open Internet. 
  June 15, 2013 - The Christian Science Monitor
• NSA cyber spying on China not a surprise, but it's not ho-hum, either
  NSA chief says leaks about US cyber spying on China, and techniques for doing it, will impair intelligence-gathering. Others play that down, saying the more significant hit will be to relations with China and to US global work on behalf of a free and open Internet. 
  June 15, 2013 - The Christian Science Monitor
• Do antidepressants impair the ability to extinguish fear?
  Common antidepressant medications may impair a form of learning that is important clinically. Selective serotonin reuptake inhibitors, commonly called SSRIs, are a class of antidepressant widely used to treat depression, as well as a range of anxiety disorders, but the effects of these drugs on learning and memory are poorly understood.
  June 10, 2013 - Science Daily

Quotes

---

• Robert Gates in Washington Post
  Failure in Iraq at this juncture would be a calamity that would haunt our nation, impair our credibility, and endanger Americans for decades to come,Robert M. Gates said yesterday upon taking the oath to be Secretary of Defense.
• Ben Bernanke in Seeking Alpha (blog)
  ...a blunt editorial in Sunday's Washington Post, Fed chairman Ben Bernanke spoke against government meddling to shrink the Fed's role in supervising the US banking system, warning this would "impair the prospects for economic and financial...