"Kosztowny błąd" in Polish is the translation of English "Costly mistake" (find more translations on these pages: "Costly mistake in Different Languages" and "Costly mistake in Polish").

Kosztowny błąd pronunciation: If you want to know how to pronounce kosztowny błąd in Polish (that is, how we say "Costly mistake" in Polish), you will find the audio pronunciation below.

Please listen to the proper pronunciation and remember how to say it. We hope this will help you to master your Polish language.

Here is the Polish pronunciation of the word kosztowny błąd:
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