Search gender: all male female タダ Japanese Boy Names Variations. 2 names found. gender: all male female Name: tada Katakana: タダ 0 Kanji: 忠 Meaning: 忠Sincerity. To serve with sincerity. Seriousness. To serve the state or sovereign with all one's heart. To work hard without bothering. Name: tada Katakana: タダ 0 Kanji: 帝 Meaning: 帝Emperor You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > タダ Japanese Boy Names Variations.