The name Tadao is commonly spelled using the following IPA phonetic transcription: tædaʊ. The first syllable is pronounced with the short "a" sound, like in the word "cat", while the second syllable ends with a dipthong, or a combination of two vowel sounds, "ah" and "oh". The "d" is pronounced with the tip of the tongue placed behind the upper front teeth. Overall, Tadao is simple to spell and pronounce once the phonetic transcription is understood.
The name "Tadao" has a Japanese origin. It is spelled as 忠雄 in Kanji, with 忠 (Tada) meaning "loyalty" or "faithfulness" and 雄 (O) meaning "hero" or "man". Overall, the name Tadao can be translated to mean "loyal hero" or "faithful man".