Cassidy sits next to 5 phonetic neighbors — Cassandra, Cadence, and Callie are the closest matches by sound. Most share Cassidy's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"curly-haired"
"industrious, striving"
"devoted to Jove (Jupiter)"
"gift from God"
"purity, innocence"
"trio, the number three"
"month of Aphrodite"
"crown of laurels"
"precious gemstone"
"crooked nose"
"little bird"
"member of the Gauts (Germanic tribe)"
"to flow down, descend"
"motion, movement"
"sky leader, noble one"
"descendant of the fire god"
"ruler of the elves"
"lucky, seventh"
"sea of bitterness"
"mistress, lady of the house"
"worthy of love, she who must be loved"
Similar sound: These names share phonetic patterns with Cassidy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish origins, giving them the same cultural heritage as Cassidy.
Rhythm: Cassidy is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.