Thaddaeus

name

By · According to Wiktionary data (CC BY-SA) ·

"thaddaeus" is a 9-letter English headword indexed on PlainSpell.

The verdict

“Thaddaeus” is uncommon English (outside the top frequency list), classed as a proper noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An Apostle, identified with Jude.

Key facts for Thaddaeus
PropertyValue
HeadwordThaddaeus
LanguageEnglish
Part of speechProper noun
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “Thaddaeus” sits in English frequency

Thaddaeus falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

Thaddaeus is uncommon English outside the top frequency list, classed as aproper noun. Rarity is why readers land here mid-draft. 2 senses are on record.

Thaddaeus doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos). The correct English form is Thaddaeus, spelled T-H-A-D-D-A-E-U-S.

Definition

  1. 1
    An Apostle, identified with Jude.
  2. 2
    A male given name from Ancient Greek; usually spelled Thaddeus.

Etymology

From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos).

This word in other languages

Tadeo(Español)Thaddée(Français)Thaddäus(Deutsch)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Thaddaeus"?
"Thaddaeus" is spelled T-H-A-D-D-A-E-U-S.
What does "Thaddaeus" mean?
As a proper noun, "Thaddaeus" means: An Apostle, identified with Jude.
What is the origin of the word "Thaddaeus"?
From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “Thaddaeus”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-H-A-D-D-A-E-U-S - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list