υπακούω

Etymology: From Ancient Greek ὑπακούω (hupakoúō), from ὑπό (hupó, 'under') + ἀκούω (akoúō, 'to hear'). The compound literally means 'to hear under', evolving to mean 'to submit to hearing' and thus 'to obey'. The root ἀκούω gives us English words like 'acoustic' and 'acoustics'.