This is the 6216th most frequent Polish word.
bartoszem
"Bartoszem" is the instrumental case of the Polish male name "Bartosz," meaning "with Bartosz" or "by Bartosz."
The word 'Bartoszem' is used in the instrumental case as a form of the name 'Bartosz', used to indicate the means or accompaniment (the person with whom the action was performed).
Wczoraj spotkałem się z Bartoszem w kawiarni.
Yesterday, I met with Bartosz in the coffee shop.
Here, 'Bartoszem' again is used in the instrumental case, showing cooperation or company during the action of talking.
Rozmawiałem o projekcie razem z Bartoszem.
I talked about the project together with Bartosz.
The word 'Bartoszem' is employed in a context that indicates partnership or joint effort during work, using the instrumental case.