fatal
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Learner's definition of FATAL
[more fatal; most fatal]
1
:
causing death
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a fatal accident
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a disease that is often fatal
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a fatal blow
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a chemical that can be fatal to birds
2
:
causing ruin or failure
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She made a fatal mistake/error.
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The plan contained a fatal flaw. [=a flaw that would cause it to fail]
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a fatal weakness
— fatally
adverb-
fatally shot/wounded
