Meaning: Decisive man
Gender: Male
Pronunciation: Sa-Da-O
Language origin of Sadao: Japanese
Regional origin of Sadao: East Asia
Languages Sadao is most common: Japanese
Religions Sadao is most common: Shinto, Buddhism
First letter and sound: S, Sa
Last letter and sound: O, o
Alternative Spelling: Sadeo, Sadio, Saduo, Sadao