significant.

1. Large or important enough to deserve attention.

2. Meeting a stated statistical threshold for evidence against a null hypothesis under a chosen model.

Use it for

Words that belong together

• significant change
• significant contribution

On the page

The revision made a significant difference to the argument.

Usage notes

Primary category: academic / formal. Forms: Comparative more significant; superlative most significant when comparison is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.