Such as matriarchy. Lots of Latin words are borrowed Greek words. But if you insist, you could have schediocracy, from σχεδίασμα (skhedíasma). Or maybe drop th

Such as matriarchy. Lots of Latin words are borrowed Greek words. But if you insist, you could have schediocracy, from σχεδίασμα (skhedíasma). Or maybe drop the h to give *astatocracy, like astatine, the unstable element. Easier to say.