Otonari JapaneseThis surname combines 乙 (itsu, otsu, oto-, kinoto) meaning "duplicate, strange, the latter, witty" or 音 (in, on, -non, oto, ne) meaning "noise, sound" with 成 (jou, sei, na.su, -na.su, na.ru, nari) meaning "become, elapse, get, grow, reach, turn into."