This is the 13231st most frequent German word.
aufmachen
"Aufmachen" means "to open."
The word 'aufmachen' is a separable verb meaning 'to open', used here in the context of opening a physical object like a door.
Ich werde die Tür aufmachen.
I will open the door.
In this context, 'aufmachen' means to start or open a new establishment, such as a shop.
Wir sollten ein neues Geschäft in der Stadt aufmachen.
We should open a new shop in the city.
Again, 'aufmachen' means 'to open', here used for opening a window, indicating its flexibility in referring to various objects that can be opened.