Search gender: all male female Shigenatsu Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: shigenatsu Katakana: シゲナツ 0 Kanji: 茂夏 Meaning: 茂To grow thickly. The branches and leaves of plants and trees grow actively. Excellent. Splendid. 夏Summer. It is one of the four seasons. Big. Prosperous. The name of a dynasty or country in China. China's own name. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Shigenatsu Name Meaning, Kanji Variations.