Search gender: all male female Tadahatsu Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: tadahatsu Katakana: タダハツ 0 Kanji: 忠肇 Meaning: 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. 肇To begin. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Tadahatsu Name Meaning, Kanji Variations.