Where does “ανακόλουθος” come from?

ανακόλουθος (Greek) comes from Ancient Greek ἀνακόλουθος, from Ancient Greek ἀκόλουθος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

ανακόλουθος (Greek): inconsistent, incoherent