Formal:
* Dziękuję (pronounced "dzen-koo-ya") - This is the most common and formal way to say "thank you."
* Dziękuję bardzo (pronounced "dzen-koo-ya bar-dzo") - This translates to "thank you very much" and is a slightly more emphatic way to express gratitude.
Informal:
* Dzięki (pronounced "dzen-kee") - This is a more casual and informal way to say "thank you" and is often used with friends and family.
* Dzięki wielkie (pronounced "dzen-kee vyehl-kee") - This translates to "thanks a lot" and is a very informal way to express gratitude.
You can also add "bardzo" (very) or "za" (for) to express your gratitude more specifically.
Here are some examples:
* Dziękuję za pomoc. (Thank you for your help.)
* Dziękuję bardzo za zaproszenie. (Thank you very much for the invitation.)
* Dzięki za kawę. (Thanks for the coffee.)
* Dzięki wielkie za wszystko. (Thanks a lot for everything.)