Meaning of “crucial” in the English Dictionary

"crucial" in British English

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uk /ˈkruː.ʃəl/ us /ˈkruː.ʃəl/

B2 extremely important or necessary:

a crucial decision/question
Her work has been crucial to the project's success.
[ + that ] It is crucial that the problem is tackled immediately.

More examples

  • Price will be a crucial factor in the success of this new product.
  • The motif of betrayal and loss is crucial in all these stories.
  • The turning point in her political career came when she was chosen to fight a crucial by-election.
  • During the trial, the prosecution was accused of withholding crucial evidence from the defence.
  • The Panama Canal provides a crucial shipping link between the Atlantic and Pacific oceans.
adverb uk /ˈkruː.ʃəl.i/ us /ˈkruː.ʃəl.i/

(Definition of “crucial” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"crucial" in American English

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us /ˈkru·ʃəl/

(of a decision or event) extremely important because many other things depend on it:

The behavior of the oceans is a crucial aspect of global warming.
adverb us /ˈkru·ʃə·li/

The band wants to win over fans and, more crucially, radio programmers.

(Definition of “crucial” from the Cambridge Academic Content Dictionary © Cambridge University Press)