Search gender: all male female Sadayasu Boy Name Meaning, Kanji Variations. 21 names found. gender: all male female Name: sadayasu Katakana: サダヤス 0 Kanji: 定休 Meaning: 定Decide. Calm down. To stabilize. To calm down. To settle down to a certain level and not move. Surely. Always. Clearly. 休Break. Happiness. Congratulations. To quit work, etc. A word that expresses prohibition. Wonderful. to be proud of. To feel sorry for. You can save your favorite names with prev12 NazukePON > About Japanese Names > Search For Japanese Names > Sadayasu Boy Name Meaning, Kanji Variations.