Aster sits next to 3 phonetic neighbors — Asher, Castor, and Lester are the closest matches by sound. Most share Aster's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"star"
"modern invented name, associated with key and warrior elements"
"modern invented name, sound-based"
"smooth, tender"
"heart"
"God is good"
"the kingdom of Ciar, County Kerry"
"little fire"
"honorable"
"ancient, enduring"
"hollow, small cavity"
"elm grove, place of elms"
"God is my light, my flame is Yahweh"
"creative phonetic variant of Kaizen"
"lord, master (via Kyrie element)"
"new house"
"of the crow, raven-haired"
"beam of light (via Ray)"
"noble strength"
"stone-like, hard, steadfast"
"one who possesses, nest-maker"
Similar sound: These names share phonetic patterns with Aster — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Greek origins, giving them the same cultural heritage as Aster.
Rhythm: Aster is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.