Lillie sits next to 4 phonetic neighbors — Lily, Lilly, and Billie are the closest matches by sound. Most share Lillie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower, purity"
"pure, holy"
"ugly-headed (original Gaelic)"
"little eagle"
"delicate, gentle"
"church, from the town of Paisley"
"entire, all-encompassing"
"great, majestic"
"stem, hollow reed"
"flowing, streaming"
"beautiful, rare and precious"
"bright, shining light"
"soft, tender, gentle"
"orchid flower (Cattleya species)"
"olive"
"firstborn daughter"
"strong, noble, high"
"renowned in battle"
"son of Maud, mighty in battle"
"frequenter of churches"
"high-born chief of the heavens"
Similar sound: These names share phonetic patterns with Lillie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lillie.
Rhythm: Lillie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.