Definition of crucial
1a : important, significant … what use we make of them will be the crucial question.— Stanley Kubrick Vitamins are crucial for maintaining good health.
b : important or essential as resolving a crisis : decisive She played a crucial role in the negotiations.
c : marked by final determination of a doubtful issue
the crucial game of a series
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Merriam-Webster unabridgedWords at Play
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Time Traveler for crucial
The first known use of crucial was in 1706
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