Zadie sits next to 3 phonetic neighbors — Sadie, Zoey, and Zara are the closest matches by sound. Most share Zadie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"princess, noblewoman"
"free woman"
"water nymph"
"unconquerable, invincible"
"a history, a recounting (archaic)"
"light of God"
"sweet basil"
"lucky, fortunate"
"jasmine flower"
"beautiful sky"
"mistress, noblewoman"
"noble, gracious"
"born at Christmas"
"noble natured"
"fair phantom, white wave"
"noble, honored"
"morning star, Venus"
"song, chant"
"elevated by God (from -ayah suffix)"
"immortal, eternal"
Similar sound: These names share phonetic patterns with Zadie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Zadie.
Rhythm: Zadie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.