crux

US /ˈkrʌks/
UK /ˈkrʌks/
"crux" picture
1.

Kernpunkt, Knackpunkt, Wesentliche

the most important or essential point of an issue or problem

:
The crux of the matter is that we don't have enough funding.
Der Kernpunkt der Sache ist, dass wir nicht genug Finanzierung haben.
He finally got to the crux of his argument.
Er kam endlich zum Kernpunkt seines Arguments.