boys:
1.1k births since 1912
#3491 (24th percentile)
overall:
1.1k births since 1912
#6628 (14th percentile)
The name Thadeus is the #6,628 most popular name of all time in the U.S. on a gender-neutral basis, with a total of 1,111 recorded births since 1912. This represents the 14.3% percentile of name popularity (more popular than 14.3% of all names). For boys, it ranks #3,491 (23.8% percentile) for all time with 1,111 births since 1912.
Thadeus first appeared in U.S. birth records in 1912 (first recorded for boys in 1912). Birth data for Thadeus is available in 90 out of the 111 years between 1912 and 2022. The Social Security Administration only reports birth data for years in which the name was given to at least five children of the same gender.
For boys, Thadeus reached its peak popularity in 1918, achieving the 4.2% percentile (ranked #509) with 26 births per million. The name was most common in 1918, with 26 births per million (ranked 4.2% percentile). There have been no recorded male births with this name since 2022.
This chart shows the total number of births per million babies in each year for the name "Thadeus".
These names exclude other spelling variations of Thaddeus. View all variations of Thaddeus.
These similar-looking names have spellings that are closest to the spelling of "Thadeus", in the sense that there are the fewest number of letter differences between the two spellings. This list excludes the 8 other name spellings that we've determined are also variations of "Thaddeus" based on shared pronunciations. Click here for more details on names that are pronounced like Thaddeus..
Our model has identified 6 different pronunciations for the name Thadeus. Click the play button under each pronunciation to hear it spoken aloud.
Our model is 29.7% confident that Thadeus is pronounced as THAY-dee-uhs, which has 3 syllables. The next most likely pronunciation is thuh-DEE-uhs, at 27.0% confidence, with 3 syllables.
If none of the pronunciations above sound right to you, could you please check whether any of these related pronunciations should be applied to the name Thadeus? These are pronunciations that other similar names use, but which are not currently associated with Thadeus. If you think any of these are valid pronunciations for Thadeus, please vote using the thumbs up button.
Our confidence scores estimate the likelihood that a particular pronunciation is the most correct for a given name spelling. These scores are derived from pronunciation dictionaries, manual verification, your feedback, and a fine-tuned large language model trained to generate name pronunciations.
For any given spelling, confidence scores across all identified pronunciations sum to 100%. However, these scores don't account for the possibility of valid pronunciations that our model hasn't identified.
The raw pronunciations shown (like TH EY1 D IY0 AH0 S) use the ARPAbet phoneme system, a standardized way to represent English speech sounds. Each symbol represents a distinct sound in American English. Visit the ARPAbet Wikipedia page to learn more about these phonetic symbols.
Pronunciation audio is generated by an open source text to speech model that has been customized to adhere to pronunciations provided in ARPAbet format, but sometimes pronunciations that differ subtly will sound identical, particularly if the only difference is the level of emphasis on a syllable or a single vowel sound.
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