Here are some options for a Hawaiian name that could be similar in sound or meaning to "Cecilia":
* Kekela: Meaning "cheerful" or "joyful," could be a good choice if Cecilia is known for her happy disposition.
* Kele: Meaning "voice" or "song," could be a good option if Cecilia is musical or loves to sing.
* Leilani: Meaning "heavenly flower," could be a beautiful and feminine choice.
* Nani: Meaning "beautiful," could be a simple and elegant option.
Ultimately, the best Hawaiian name for "Cecilia" would depend on your personal preferences and the meaning you want to convey.