Fun Facts About the Name Tadei
- 23 babies named Tadei: U.S. records list 23 babies given the name Tadei from 1880 through 2025.
What Does the Name Tadei Mean?
Tadei is a form of Thaddeus, which comes into European languages through Latin Thaddaeus from Greek Thaddaios (Θαδδαῖος). The Greek name is generally taken to rest on an Aramaic word, but the exact word has not been established, so the literal meaning is uncertain. The explanation most often given connects it with Aramaic tada, "breast" or "heart," which produces the customary glosses "heart" and "courageous one." A link to Greek Theodoros, "gift of God," is sometimes suggested but is usually treated as popular etymology rather than a sound derivation. Because the Semitic evidence is thin, all of these remain proposals rather than a settled translation.
Tadei belongs to a family of forms that continue the same Greek name in different languages: Italian Taddeo, Spanish and Portuguese Tadeo, Polish Tadeusz, Georgian Tadeoz. The spelling ending in -ei is characteristic of the Italian surname Taddei, a patronymic built on Taddeo; as a personal name, Tadei is best understood as an Italianate rendering within that same group rather than as a name with a separate etymology.
Tadei Name History & Origins
The name entered Christian use through the New Testament. In the Gospels and Acts, Thaddaios appears as a byname of the apostle Jude, described as "Judas son of James" (Luke 6:16; Acts 1:13), which is why he is commonly called Jude Thaddeus and kept distinct from Judas Iscariot. Latin Bibles preserved the Greek form as Thaddaeus, and from Latin the name passed into the vernaculars of Europe, taking the shape Taddeo in Italy, Tadeo in Spain and Portugal, Tadeusz in Poland, and Tadeoz in Georgia.
In Italy, Taddeo gave rise to the patronymic surname Taddei, formed with the plural genitive ending -ei; the spelling Tadei is a variant of that family name. Polish Tadeusz was borne by Tadeusz Kościuszko (1746 - 1817), the leader of the 1794 uprising, and it remained a familiar Polish given name.
Outside the Latin West, the same name has its own history in Syriac and Armenian Christianity. Syriac tradition calls the apostle Addai, and the Doctrine of Addai recounts how Addai was sent to King Abgar of Edessa. Armenian tradition names Thaddeus, along with Bartholomew, as one of the apostles who first brought Christianity to Armenia, and both are honored as patron saints of the Armenian Church.
How Popular is the Name Tadei?
Tadei has historically been an exceptionally rare given name in the United States, remaining well outside the national mainstream. It saw its highest recorded annual births in 2024. Its best rank was #7,658 in 2024.
U.S. name popularity from 1880-2025, based on SSA data. Rank shows how the name compares with other names - lower numbers mean greater popularity. Births shows how many babies received the name each year.
| Year | Rank | Births | % |
|---|---|---|---|
| 2025 | #10,546 | 7 | 0.0004% |
| 2024 | #7,658 | 11 | 0.0006% |
| 2023 | #13,929 | 5 | 0.0003% |
Name popularity over more than a century, based on Social Security Administration data. Gaps in the chart indicate years when the name does not appear in the published records.
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How the Name Tadei Shapes Your Personality and Life?
You like to control everyone within your influence, to shape things to your own liking. If positive, you develop high spirituality, as you have a God's protection. You are sensitive, affectionate, imaginative and cooperative, spiritually aware and prone to self-sacrifice. You can keep secrets and are a good diplomat. You may have healing and psychic powers. You are bold, independent, inquisitive and interested in research. You know what you want and why you want it.
Creative and outgoing, you are always looking for an opportunity to show your abilities, especially before audience. You are very flexible and like to feel appreciated. You are looking for chances to mix with others socially and to communicate your ideas. You like to talk and can easily relate to different cultures and concepts. The biggest challenge for you is uncertainty. Easily getting bored, you can move from one job to another, switch projects and lovers. The high creative force can lead you either to happiness or unhappiness. If you understand your goals, if you can make major decisions in life and follow it directly and straight up without worry and uncertainty, you are able to achieve great heights.
✦ Tadei's Deeper Meaning & Tips for Parents Discover Tadei's symbolic numbers and practical tips for choosing a name that complements your child's birth date.