thank you

"Dziękuję" is the standard Polish way to express gratitude. It comes from the verb "dziękować" (to thank). The mental image is a warm, polite acknowledgment of a favor or a gift, serving as the essential building block for social etiquette in Poland. While "dziękuję" works in almost every situation, you can add "bardzo" (very much) to make it stronger. In very casual settings among friends, people often shorten it to "dzięki," which functions similarly to "thanks" in English.
In conversation
At a coffee shop
Proszę, oto twoja kawa.
Here you go, here is your coffee.
Dziękuję bardzo!
Thank you very much!
A standard, polite interaction between a customer and a service provider.
Returning a borrowed item
Masz, oddaję ci książkę.
Here, I'm returning your book.
Dzięki!
Thanks!
The word 'dzięki' is the informal equivalent, perfect for friends.
Examples
Dziękuję.
Thank you.
Dziękuję bardzo za pomoc.
Thank you very much for the help.
Chciałbym ci serdecznie podziękować za wszystko, co dla mnie zrobiłeś.
I would like to sincerely thank you for everything you have done for me.