thousandth
/ˈθaʊzən(d)θ/
"thousandth" is a 10-letter English headword indexed on PlainSpell.
The verdict
“thousandth” is uncommon English (frequency #50,271 among 27,828 “T” headwords), classed as an adjective. The kind of spelling people second-guess.
- #50,271
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The ordinal numeral form of one thousand; last in order of a series of a thousand; next after the nine hundred and ninety-ninth.
| Property | Value |
|---|---|
| Headword | thousandth |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈθaʊzən(d)θ/ |
| Letters | 10 |
| Frequency rank | #50,271 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “thousandth” sits in English frequency
Rare enough to double-check
thousandth is uncommon English at frequency #50,271 among 27,828 “T” headwords, classed as anadjective, transcribed /ˈθaʊzən(d)θ/. Rarity is why readers land here mid-draft. Gloss: "The ordinal numeral form of one thousand; last in order of a series of a thousand; next after the nine hundred and ninety-ninth.".
Our edit-distance generator produced no likely misspellings for thousandth, a straightforward case of a spelling with little room for common typos. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From thousand + -th (suffix forming an ordinal number). The correct English form is thousandth, spelled T-H-O-U-S-A-N-D-T-H.
Definition
- 1The ordinal numeral form of one thousand; last in order of a series of a thousand; next after the nine hundred and ninety-ninth.
Etymology
From thousand + -th (suffix forming an ordinal number).
This word in other languages
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 “thousandth”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-H-O-U-S-A-N-D-T-H - every other letter order is a misspelling in standard orthography.
- Say it as /ˈθaʊzən(d)θ/ (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.