Infinity sits next to 3 phonetic neighbors — Serenity, Trinity, and Destiny are the closest matches by sound. Most share Infinity's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"endless, boundless, without limit"
"all-gifted"
"variant of Agnes/Vanessa"
"beautiful rose (folk etymology)"
"source of joy"
"mine, belonging to me"
"farmer, earthworker"
"modern coinage with divine suffix"
"Cambria, ancient name for Wales"
"dry (flowering plant)"
"fairest, loveliest"
"tortoise"
"meadow of grace"
"grace, favor"
"resolute protector"
"thanks, gratitude"
"soft, tender"
"striving, ambitious"
"oak tree, terebinth"
"place by the bridge"
"enlightenment, awakening"
Similar sound: These names share phonetic patterns with Infinity — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Infinity.
Rhythm: Infinity is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.