the crux

noun

: the most important part of something (such as a problem, issue, puzzle, etc.)

—usually + of

The crux of the matter is that people are afraid of change.

It's taken a while to get to the crux of the problem, but I think I finally understand it.

Examples of the crux in a Sentence

Recent Examples on the Web

But the strikes in Lebanon and the ballistic missile attack on Israel drove home the fundamental fact that had been overlooked for almost a year: the crux of the matter is Iran. —Ari Shavit, Foreign Affairs, 5 Oct. 2024

Washable silk sets are at the crux of the pajama assortment, including tank tops, short sleeves, and drawstring pants. —Laura Lajiness Kaupke, Vogue, 29 Sep. 2024

Tyler says the crux of Supreme’s staying power and cultural currency is a byproduct of its community of customers, particularly the brand’s most die-hard enthusiasts. —Preezy Brown, VIBE.com, 19 Aug. 2024

Proving the essential facts as alleged in the complaint in regard to the circumstances surrounding the fire safety assessment for the Turkish consular building will be the crux of this case. —Steve Weisman, Forbes, 27 Sep. 2024