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fatal
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/ˈfeɪt(ə)l/- 2with very serious negative effectsprove fatal (=destroy something):
The recession has proved fatal to many businesses.
a fatal blow:The sudden resignations dealt a fatal blow to the society.
a fatal mistake/error:I made the fatal mistake of falling in love with him.
fatal flaw (=serious fault):Yesterday’s report highlighted fatal flaws in the system.
This is the American English definition of fatal. View British English definition of fatal.
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