Ancient Greek ὀφείλω

← Ancient Greek ὄφελος (mention)

← Proto-Hellenic *opʰéľľō (inherited)

← Proto-Indo-European *h₃bʰélyeti (inherited)

← Proto-Indo-European *h₃bʰel- (mention)

→ Greek ωφελώ (mention)

→ Ancient Greek ὄφελος (mention)

→ Ancient Greek ὀφειλέτης (mention)

→ Ancient Greek ὀφέλλω (mention)

→ Ancient Greek ὠφέλιμος (mention)