41%RatingSave Gender Masculine Usage Polish (Rare) Pronounced Pron. MSHCHEES-waf [key·IPA] Meaning & HistoryExpand Links Polish form of Mstislav. Related NamesFamily Tree·Details Other Languages & CulturesMstislav(Czech) Mĭstislavŭ(Old Slavic) Mstislav(Russian) Name DaysName Days? Poland: January 8