Search gender: all male female Sadashizu Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sadashizu Katakana: サダシズ 0 Kanji: 定静 Meaning: 定Decide. Calm down. To stabilize. To calm down. To settle down to a certain level and not move. Surely. Always. Clearly. 静Quiet. No sound. No movement. Calm. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sadashizu Name Meaning, Kanji Variations.