From Ancient Greek -κρατία (-kratía), from κράτος (krátos, “power”). Etymology tree Proto-Indo-European *kret- Ancient Greek κρᾰ́τος (krắtos) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -κρᾰτῐ́ᾱ (-krătĭ́ā)bor. German -kratie