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"
"handsome, gentle"
"from the Roman Gens Terentia"
"gift of God (from Armenian/Hebrew Zaven)"
"modern phonetic creation"
"imperial title, emperor"
"God has heard"
"air, atmosphere"
"bright friend"
"victory of the people"
"conquering, victorious"
"strong power"
"young person, noble youth"
"father of multitudes"
"willow farm, ledge estate"
"American creative variation"
"rider, horseman, mounted warrior"
"dark, black-haired"
"powerful ruler's son"
"son of Japheth, grandson of Noah"
"oak trees, oak grove"
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.