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English definition of “controversy”

controversy

noun [C/U]  /ˈkɑn·trəˌvɜr·si/ us  
a disagreement, often a public one, that involves different ideas or opinions about something: [C] Publication of the article unleashed a scientific controversy that raged for years. [U] The president’s decisions stirred up a lot controversy.
(Definition of controversy from the Cambridge Academic Content Dictionary © Cambridge University Press)
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