seventieth
/ˈsɛvnti.əθ/
"seventieth" is a 10-letter English headword indexed on PlainSpell.
The verdict
“seventieth” is uncommon English (frequency #95,401 among 6,566 “S” headwords), classed as an adjective. The kind of spelling people second-guess.
- #95,401
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The ordinal form of the number seventy.
Corpus desk
Index EN-seventieth · seventieth · English
seventieth · rank #95,401 · 0 variants · 0 confusables
- FREQ-RARE #95,401
- LEN-MEGA 10 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH sesquicentenn…
Nearest frequency peer: sesquicentennial (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “seventieth”
Sparse band: bars invert rank so rarer forms read shorter
- sensually
sensually
4,604 corpus weight
- serotonergic
serotonergic
4,603 corpus weight
- Sers
Sers
4,602 corpus weight
- sesquicente…
sesquicentennial
4,601 corpus weight
- seventieth
seventieth
4,600 corpus weight
- shafter
shafter
4,599 corpus weight
What this shows Long-tail view: where “seventieth” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | seventieth |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈsɛvnti.əθ/ |
| Letters | 10 |
| Frequency rank | #95,401 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “seventieth” in English
Rare enough to double-check
seventieth is uncommon English at frequency #95,401 among 6,566 “S” headwords, classed as anadjective, transcribed /ˈsɛvnti.əθ/. Rarity is why readers land here mid-draft. Gloss: "The ordinal form of the number seventy.".
We couldn't generate a plausible misspelling set for seventieth, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From earlier seventeth, from Middle English seventiþe, seventithe; equivalent to seventy + -eth. For the modern form, see the etymological notes at twentieth. The correct English form is seventieth, spelled S-E-V-E-N-T-I-E-T-H.
Definition
- 1The ordinal form of the number seventy.
Etymology
From earlier seventeth, from Middle English seventiþe, seventithe; equivalent to seventy + -eth. For the modern form, see the etymological notes at twentieth.
Synonyms
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "seventieth", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 10 letters (nearest by frequency rank).