How to read: どうすけ
Pronunciation: 
Names and idioms with total stroke of 13:
柄戸 隼巳 張丁 一躰 吉言
Names and idioms similar to 洞介:
小洞 眞介 恭之介 洞裏 袴介殻虫
Celebrity names including 洞介:
吉田洞介
Yojijukugo(idioms with 4 Kanji characters) including 洞介:
孤高狷介 跌宕狷介 洞天福地