This is the 13871st most frequent Swedish word.
ässet
"Ässet" in Swedish means "the ace" (as in playing cards or someone excellent at something).
Here, 'äss' is used metaphorically to represent someone or something that is a hidden advantage or an excellent resource.
Du är mitt äss i rockärmen.
You are my ace up my sleeve.
In this context, 'äss' refers literally to the playing card ace, indicating its value in the game.
Ässet i kortleken är värt mycket i poker.
The ace in the deck is worth a lot in poker.
The word 'äss' is being used here to signify exceptional skill or excellence, specifically in the profession mentioned.