Correct spelling for the English word "Kreig" is [kɹˈe͡ɪɡ], [kɹˈeɪɡ], [k_ɹ_ˈeɪ_ɡ] (IPA phonetic alphabet).
The word "Kreig" is actually a misspelling of "Krieg". The term "Krieg" is derived from the German language, specifically from Middle High German "krēc" and Old High German "krēg", which both mean "war". The word has remained relatively unchanged in German and is still used today to refer to "war". It has also been adopted into other languages, such as Dutch ("krijg") and Norwegian ("krig"), with the same meaning.