# crucially

/ˈkɹuʃəɫi/ (US) · /kɹˈuːʃəlˌi/ (UK) · CEFR B2 · Adverb

Source: https://englishreference.com/word/crucially
Updated: 2026-05-18

## Definition

in a way that is very important or necessary for something to happen. You use this to emphasize the most important point in a situation.

For teachers: in a manner that is essential or vital to the success or outcome of a situation. Often used to introduce the most significant factor in a discussion.

## Examples

- Crucially, the team needs more money to finish the project.
- The new software update is crucially important for the company's security, as it fixes a major bug.
- While the initial strategy was sound, the team failed to account for the local climate, which was crucially overlooked during the planning phase.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.