Search gender: all male female Shusai Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: shusai Katakana: シュウサイ 0 Kanji: 秀哉 Meaning: 秀To excel. To excel. To grow. 哉Auxiliary characters for questions and antonyms. A particle expressing emotion or admiration. Beginning. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Shusai Boy Name Meaning, Kanji Variations.