aufmachen

Verb

 * 1)  to open (a container, a door or window)
 * 2)  to open for business
 * 3)  to get ready; to set out
 * 4)  to put up; to hang
 * 1)  to get ready; to set out
 * 2)  to put up; to hang
 * 1)  to put up; to hang

Usage notes

 * and are not in themselves informal. However, the formal language prefers  and, which are in turn rare in colloquial speech (though  is common in compounds like , , etc.).