Search gender: all male female Sonju Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sonju Katakana: ソンジュ 0 Kanji: 尊樹 Meaning: 尊Respect. A high value or rank. A word expressing respect. A title of respect attached to the name of a deity or noble person. 樹Trees. General term for plants. To plant a tree. To set up. To stand firmly. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sonju Boy Name Meaning, Kanji Variations.