za

At or to the back or far side of.

Қалай қолдану керек

The word 'za' acts as a preposition governing the instrumental case for static location ('za domem' — behind the house), the accusative case for movement/direction ('iść za dom' — to go behind the house, or 'dziękować za pomoc' — to thank for help), and the genitive case in time expressions ('za moich czasów' — in my time). It also acts as an adverb meaning 'too / excessively' when modifying adjectives (e.g., 'za drogi' — too expensive).