Ancient Greek δειλός

← Ancient Greek δεινός (cognate)

← Proto-Indo-European *dwey- (root)

← Proto-Indo-European *dwey- (derived)

← Latin dīrus (cognate)

← Old Armenian երկն (cognate)

→ Ancient Greek δειλότης (affix)

→ Ancient Greek δειλία (affix)

→ Ancient Greek ζημία (mention)

→ Latin bonus (mention)