Search gender: all male female Tadaiki Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: tadaiki Katakana: タダイキ 0 Kanji: 忠行 Meaning: 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. 行Go. Walk. Do. Act. Travel. Line. One of the typefaces. Store. An abbreviation for bank. Buddhist work and practice. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Tadaiki Boy Name Meaning, Kanji Variations.