Save Gender Feminine Usage Japanese Pronounced Pron. SAH-EH-KOH [key] Meaning & History This name can be used as 冴希, 彩樹 or 彩木 with 冴 (go, ko, sa.eru, koo.ru, hi.eru) meaning "be clear, serene, cold, skilful", 彩 (sai, irodo.ru, sae) meaning "coloring, paint, makeup", combine with 子 (ko) meaning "child"