Where does “φόβος” come from?

φόβος (Ancient Greek) comes from Ancient Greek φέβεσθαι, from Ancient Greek φέβομαι, from Proto-Hellenic pʰégʷomai, from Proto-Indo-European bʰégʷeti, from Proto-Indo-European bʰegʷ- — to flee; to run.

φόβος (Ancient Greek): fear, terror, alarm, fright, panic; the act of...