Yiddish וואָס

← Proto-Germanic *hwat (inherited)

← Middle High German waz (inherited)

← Proto-West Germanic *hwat (inherited)

← Old High German waz (inherited)

← Proto-Indo-European *kʷód (inherited)

→ Hebrew ווסווסים (derived)

→ Yiddish דאָס (link)

→ Yiddish פֿאַרוואָס (compound)