Definition of crucial in English:

crucial

Line breaks: cru|cial
Pronunciation: /ˈkruːʃ(ə)l
 
/

adjective

1Decisive or critical, especially in the success or failure of something: negotiations were at a crucial stage
More example sentences
  • Bad management and bad cost control will be crucial in deciding success or failure.
  • We have reached a crucial stage and now tenants and residents will begin to see real improvements on their estate.
  • His appointment comes at a crucial stage in this long-running drugs war.
Synonyms
1.1Of great importance: this game is crucial to our survival
More example sentences
  • If you want to lose weight, it is crucial to maintain low insulin levels.
  • It is crucial to keep your head covered when running outside in winter.
  • Only 15 percent mentioned domestic policies as being most crucial to them.
Synonyms
very important, of the utmost importance, of great consequence, of the essence, critical, high-priority, pre-eminent, paramount, all-important, essential, vital, vitally important, indispensable, mandatory, urgent, pressing, compelling, necessary, needed, required, requisite
1.2 informal Excellent.
More example sentences
  • That's crucial man, so please keep doing your thing!
  • In fact, it's so totally crucial I wanna hear more.

Origin

early 18th century (in the sense 'cross-shaped'): from French, from Latin crux, cruc- 'cross'. The sense 'decisive' is from Francis Bacon's Latin phrase instantia crucis 'crucial instance', which he explained as a metaphor from a crux or fingerpost marking a fork at a crossroad; Newton and Boyle took up the metaphor in experimentum crucis 'crucial experiment'.

Derivatives

cruciality

Pronunciation: /-ʃɪˈalɪti/
noun
More example sentences
  • But beyond that, surely, the narrative wants to attest to the irresistible cruciality of the Israelite prophet and the God of the Israelite prophet who is the healer of the nations.
  • This is the first chapter of the long account of life in the land and voices a primal thesis concerning the cruciality of the Torah that is to dominate the entire account to follow.
  • In his mind, he could still see his father's gleaming eyes when he reminded Michael again, a few hours ago, about the cruciality of the dinner.

crucially

adverb
[sentence adverb]: crucially, evacuees in the first wave were never subjected to systematic medical inspection
More example sentences
  • It is crucially important that people think they are electing a government, a team, not just one man.
  • The novel contains huge chunks of dialogue and, as social class is a big theme, accent is crucially important.
  • The early years of a person's life are crucially important for his or her later development.

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