crucial

From Wiktionary
crucial is on the Academic Word List.

Pronunciation[change]

Adjective[change]

Positive
crucial

Comparative
more crucial

Superlative
most crucial

  1. When something is crucial, it is very important. It will make a big difference. You cannot succeed without it.
    To write a great book, it's crucial to have the person in the book change and develop.
    It was a crucial time in the battle when the king dropped his sword.
    The development of this company is at a crossroads, and we need to make some crucial decisions.
    Iron plays a crucial role in moving oxygen around the body.
    The new doctor was crucial to the success of the operation.