FluentPlex

crucial

/ˈkɹuː.ʃəl/ adjective B2
  1. Essential or decisive for determining the outcome or future of something; extremely important; vital. · The battle of Tali-Ihantala in 1944 is one of the crucial moments in the history of Finland.· A secure supply of crude oil is crucial for any modern nation, let alone a superpower.
  2. Very good; excellent; particularly applied to reggae music. (slang) · Delbert Wilkins is the most crucial pirate radio DJ in Brixton.
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From the library

“You did not ask for particulars on any point which appeared to you to be crucial?”
A Study in Scarlet, p. 32 · B2
This brings us to a crucial question about the future of our educational system.
Is Homework Really Worth It?, p. 1 · B2
Finally, I want to give you some crucial advice about failure and making mistakes.
A Letter to My Younger Self, p. 1 · B2
Furthermore, this constant mental gymnastics severely disrupts the process of memory consolidation, which is crucial for long-term retention.
The Myth of Multitasking, p. 1 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.