Where does “παιδί” come from?

παιδί (Greek) comes from Byzantine Greek παιδίν, from Ancient Greek παιδίον, from Ancient Greek παῖς, from Proto-Hellenic pā́wits, from Proto-Indo-European péh₂wids, from Proto-Indo-European peh₂w- — few, little; smallness.

παιδί (Greek): child, kid