THAAD
/θæd/
"thaad" is a 5-letter English headword indexed on PlainSpell.
The verdict
“THAAD” is uncommon English (frequency #91,065 among 27,828 “T” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #91,065
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Acronym of Terminal High Altitude Area Defense.
| Property | Value |
|---|---|
| Headword | THAAD |
| Language | English |
| Part of speech | Proper noun |
| IPA | /θæd/ |
| Letters | 5 |
| Frequency rank | #91,065 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “THAAD” sits in English frequency
Rare enough to double-check
THAAD is uncommon English at frequency #91,065 among 27,828 “T” headwords, classed as aproper noun, transcribed /θæd/. Rarity is why readers land here mid-draft. Gloss: "Acronym of Terminal High Altitude Area Defense.".
THAAD has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
No documented word history exists for this headword, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is THAAD, spelled T-H-A-A-D.
Definition
- 1Acronym of Terminal High Altitude Area Defense.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “THAAD”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-H-A-A-D - every other letter order is a misspelling in standard orthography.
- Say it as /θæd/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
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.