Ancient Greek πληθώρη

← Ancient Greek πλήθω (affix)

← Ancient Greek -η (affix)

← Proto-Indo-European *pleh₁- (root)

→ English plethora (derived)

→ English plethora (derived(en/la))

→ English plethorically (mention)

→ Spanish plétora (derived)

→ French pléthore (borrowed)

→ Latin pletura (derived)