This is the 10485th most frequent Swedish word.
knäcken
"Knäcken" means "the crack" or "the breaking point" in English, depending on context.
Here, 'knäckt' is used metaphorically to mean solving or succeeding in a difficult problem or challenge.
Jag har äntligen knäckt koden till det svåra spelet.
I have finally cracked the code to the difficult game.
In this case, 'knäckt' metaphorically conveys being emotionally or mentally overwhelmed or deeply affected.
Carin blev knäckt när hon hörde nyheten.
Carin was shattered when she heard the news.
Here, 'knäcken' refers to an injury or damage, likely derived from the notion of something being physically broken.