Where does “πληθύω” come from?

πληθύω (Ancient Greek) comes from Ancient Greek πληθύς, from Ancient Greek πίμπλημι, from Proto-Indo-European pleh₁- — to fill.

Ancestry of “πληθύω”, step by step

StepLanguageWordMeaning
1Ancient GreekπληθύςIonic and Epic form of πλῆθος
2Ancient GreekπίμπλημιI fill; I fill myself; I am full of
3Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European pleh₁- →Every word from Ancient Greek πίμπλημι →Every word from Ancient Greek πληθύς →
πληθύω — Etymology, Origin & Word History | Etymology Explorer