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English definition of “fear”

fear

noun [C/U]  /fɪər/ us  
a strong emotion caused by great worry about something dangerous, painful, or unknown that is happening or might happen: [U] Even when the boat was rocked by waves, the boy showed no fear. [C] The low sales continued, confirming our worst fears. [U] She stood very still for fear of (= because she was worried about) being noticed.
fearless
adjective  /ˈfɪər·ləs/ us  
He was a tough, fearless soldier.

fear

verb  /fɪr/ us  
to be frightened about someone or something unpleasant: [I] The cab driver was going so fast, I feared for our safety. To fear is also to be worried or upset: [+ that clause] They fear that Congress may not allocate the money needed.
(Definition of fear from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of fear?
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