51%RatingSave Gender Masculine Usage Polish (Archaic) Pronounced Pron. /su.ˈli.swaf/ [key·simplify] Meaning & History Derived from Slavic sulěi meaning "better" or "promise" combined with slava meaning "glory". Related Names Rootssulěi + slava Name DaysName Days? Poland: February 7Poland: December 2 Categories glory, goodness, pledge