cru·​cial | \ ˈkrü-shəl How to pronounce crucial (audio) \

Essential Meaning of crucial

: extremely important Vitamins are crucial for maintaining good health. Eggs are a crucial [=essential] ingredient in this recipe. See More Examplesa crucial distinction/difference It's crucial that we arrive before 8 o'clock. Teachers are crucial to the success of the school. She played a crucial role in the meeting. Tonight's game is the crucial [=decisive] game of the series. [=whoever wins this game will win the series] a crucial decisionHide

Full 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
2 archaic : cruciform

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Synonyms for crucial


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acute, critical, crucial mean of uncertain outcome. acute stresses intensification of conditions leading to a culmination or breaking point. an acute housing shortage critical adds to acute implications of imminent change, of attendant suspense, and of decisiveness in the outcome. the war has entered a critical phase crucial suggests a dividing of the ways and often a test or trial involving the determination of a future course or direction. a crucial vote

Examples of crucial in a Sentence

Vitamins are crucial for maintaining good health. It's crucial that we arrive before 8 o'clock. Teachers are crucial to the success of the school. She played a crucial role in the meeting.
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Recent Examples on the Web Will this be enough to win the support of voters in swing districts who are crucial to maintaining control of the House in 2022? Julian Zelizer, CNN, 15 Oct. 2021 And is actually crucial to keeping the body healthy. Nayeli Lomeli, USA TODAY, 15 Oct. 2021 This is crucial to helping prepare and protect them from the harmful aspects of social media, such as the misinformation and disinformation that is rampant online. Helen Lee Bouygues, Forbes, 14 Oct. 2021 But Democrats and public health experts say vaccines are crucial to defeating the pandemic, that mandates are necessary, and that actions like Abbott's are reckless., 13 Oct. 2021 Regular cleaning and inspection are crucial to gas fireplace maintenance. Jessica Bennett, Better Homes & Gardens, 11 Oct. 2021 Outbreak data is crucial to keeping communities safe. Melissa Montalvo, San Francisco Chronicle, 11 Oct. 2021 Rural workers are poorly educated, with inadequate elementary and secondary education, leaving them unable to fill skilled-labor positions that are crucial to the PRC’s role in the global supply chain. Therese Shaheen, National Review, 9 Oct. 2021 Sinema is one of two centrist Democrats in the Senate whose votes are crucial to passing two bills that together would comprise President Biden’s legislative agenda: a $1 trillion infrastructure bill and a separate $3.5 trillion budget bill. Coral Davenport, New York Times, 8 Oct. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crucial.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of crucial

1706, in the meaning defined at sense 2

History and Etymology for crucial

French, from Latin cruc-, crux cross

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Time Traveler for crucial

Time Traveler

The first known use of crucial was in 1706

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Last Updated

19 Oct 2021

Cite this Entry

“Crucial.” Dictionary, Merriam-Webster, Accessed 28 Oct. 2021.

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More Definitions for crucial


cru·​cial | \ ˈkrü-shəl How to pronounce crucial (audio) \

Kids Definition of crucial

1 : being a final or very important test or decision : decisive a crucial battle
2 : very important : significant Water is a crucial element in our weather.

More from Merriam-Webster on crucial

Nglish: Translation of crucial for Spanish Speakers

Britannica English: Translation of crucial for Arabic Speakers


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