crucial
adjective B2
Plain meaning
extremely important
Exam-register meaning
essential to the success, validity, or outcome of a process or argument
In context
generalRegular practice is crucial if you want to improve your fluency.
examEarly childhood nutrition is crucial for cognitive development.
Common collocations
crucial rolecrucial factorcrucial evidence
Watch out
Avoid overusing it for everything. Use it only when the point is genuinely very important.
Word family
crucially (adverb)crucial (adjective)