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English definition of “blur”

blur

noun [U]  /blɜr/ us  
something whose shape is not clear A blur is also something that you cannot remember clearly: It all happened so long ago that it’s just a blur to me now.
blurry
adjective  /ˈblɜr·i, ˈblʌr·i/ us  
The exhibit consisted of blurry, blown-up, black-and-white photographs.

blur

verb [I/T] /blɜr/
(-rr-) to become unclear, or to make something hard to see: [T] These deals are blurring the distinction between local and long-distance telephone service. (-rr-) If a memory has blurred or something has blurred it, it becomes hard to remember clearly: My childhood memories are already blurring.
blurred
adjective  /blɜrd/ us  
People who develop meningitis can get a stiff neck, blurred vision, and headaches.
(Definition of blur from the Cambridge Academic Content Dictionary © Cambridge University Press)
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