Acai

It is composed of two syllables: "A" and "Cai".

Spelling	a
Closest English pronunciation	/ɑ:/
Hint	As the a in English "art".
Chinese Pinyin	ā á ǎ à
Common characters in names	阿

Spelling	cai
Closest English pronunciation	/tsaɪ/
Hint	"hats" + "eye". Not /kaɪ/.
Chinese Pinyin	cāi cái cǎi cài
Common characters in names	才 蔡 彩 采 财 材