Dog name guide

Thaddeus

The meaning, background and naming story of Thaddeus.

Letters
8
Syllables
3Dictionary reading
Starts with
T

Meaning and background

The story behind Thaddeus

Thaddeus descends through Greek Thaddaios from an Aramaic personal name, appearing in Christian biblical tradition. Its ultimate explanation is disputed: a proposed Aramaic connection with “heart” competes with the possibility of a different Greek name adapted into Aramaic. The three-syllable form has real historical depth, but it should not be advertised as definitively meaning “courageous heart”.

Origin
Biblical Latin and English form from Greek Thaddaios, tracing to an Aramaic personal name; precise original meaning disputed. Source

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About Thaddeus

Recorded as a dog’s name

Thaddeus appears in 8 dog licence records in the 2022 New York City dataset.

How to read this count

These records cover New York City and may count the same dog in more than one licence period. They are not a national popularity ranking.

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Pronunciation and rhythm

/θædiəs/

US English sound sequence, converted from the CMU dictionary. Stress marks are shown separately.

Stress on the first syllable in the recorded US readings.

View dictionary notation

/θædiəs/ · primary stress on syllable 1
TH AE1 D IY0 AH0 S

These are US dictionary readings. Personal, regional and other language pronunciations may differ.

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Sources and research notes (3)
  • New York City Department of Health and Mental Hygiene NYC Dog Licensing Dataset — all seven available extract years, retrieved 24 October 2026 — Recorded name spellings in NYC licence-period rows, extract years 2016–2018, 2022–2024 and 2026. Evidence selects one stated year per name. Annual snapshots overlap; never sum them as unique dogs. No national popularity, etymology or owner naming-intent claim.
  • Carnegie Mellon University / CMU Sphinx maintainers CMU US English Pronouncing Dictionary — US English dictionary readings; not owner-specific or exhaustive multilingual pronunciation
  • City of Seattle Seattle Pet Licenses — DOG-only name aggregate, current source dated 6 October 2026 — Secondary spelling corroboration from dog-only licence rows. No cats, owner fields, national ranking or unique-dog claim.

References support the individual facts shown. A source link does not mean the entire profile has been verified.

More names to consider

Suggestions by sound, written form or existing editorial selections. Similarity does not imply a shared origin.

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