Stage of in this word's full journey.
Where does the word "cossack" come from? It comes from Turkic qazaq, passing through Ukrainian and Russian before entering English (1590s).
Cossack’s story begins in Turkic: qazaq meant “free man, vagabond.” Used of men who left their tribe to live free on the steppe; the name 'Kazakh' comes from the same word. By 1400s-1500s, the word had taken hold in Ukrainian as kozak. Frontier warrior communities formed the Zaporozhian Host, based on islands below the Dnieper rapids from the 1550s. From there it passed into Russian as kazak by 1500s. Don Cossacks and others guarded and pushed forward Russia's steppe frontier, later leading the conquest of Siberia. It reached English by 1590s as cossack. First recorded in English accounts of Russia and Poland. Today, cossack means a member of the free warrior communities of the Ukrainian and Russian steppe frontier.