Formal/Literary:
* Rozia (pronounced RO-zee-ah): This is the most common and direct way to translate Rosie, but it's not a very popular name in Poland.
Informal/Cute:
* Rozi (pronounced RO-zee): This is a shortened and more casual version of Rozia.
* Róża (pronounced ROO-zha): This means "rose" and is a popular Polish name, giving a similar feel to Rosie.
Other options:
* Roksana (pronounced rok-SAH-nah): This is a Polish name similar in sound and meaning to "Roxanne" and could be a good alternative.
* Róża (pronounced ROO-zha) with a nickname like "Roza" (pronounced RO-zah)
Ultimately, the best way to say "Rosie" in Polish depends on the specific situation and your desired level of formality.