"Etsu" (at least one character for etsu, anyway) means rejoice. You could also break "etsu" up into 2 characters (1 for each syllable) and have: "E" ("grace/beauty" or "branch" or "picture" or "cove/inlet") "Tsu" ("by the sea") "Ko" ("child")With "ko" becoming less common when naming babies in Japan, some other variations are Etsumi ("mi" meaning "beautiful" or "fruit") and Etsuyo ("yo meaning "generation" or "world")