Acai sits next to 3 phonetic neighbors — Zara, Akai, and Asai are the closest matches by sound. Most share Acai's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fruit that cries (expels water)"
"beloved, wished-for child"
"the clove spice, nail-shaped flower bud"
"Modern invented name with no traditional etymology"
"God has helped, divine helper"
"great, large"
"island of the moon"
"lover, sweetheart"
"palatial, shrine-like"
"hazel tree (via Hazel)"
Similar sound: These names share phonetic patterns with Acai — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Tupi origins, giving them the same cultural heritage as Acai.
Rhythm: Acai is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.