archaic

From archaism (“ancient or obsolete phrase or expression”) or from French archaïque, ultimately from Ancient Greek ἀρχαϊκός (arkhaïkós, “old-fashioned”), from ἀρχαῖος (arkhaîos, “from the beginning, antiquated, ancient, old”), from ἀρχή (arkhḗ, “beginning, origin”), from ἄρχω (árkhō, “to be first”), from ἄρχω (árkhō, “to begin”), from Proto-Indo-European *h₂ergʰ- (“to begin, rule, command”).