Thetis
/ˈθɛtɪs/
"thetis" is a 6-letter English headword indexed on PlainSpell.
The verdict
“Thetis” is uncommon English (frequency #87,904 among 27,828 “T” headwords), classed as a proper noun. The kind of spelling people second-guess.
- #87,904
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - One of the nereids; the mother of Achilles
Corpus desk
Index EN-thetis · Thetis · English
Thetis · rank #87,904 · 0 variants · 0 confusables
- FREQ-RARE #87,904
- LEN-LONG 6 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 27,828
- PHOTO-FINISH theorised
Nearest frequency peer: theorised (-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.
Frequency neighbourhood for “Thetis”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- Tethys
Tethys
12,101 corpus weight
- thenceforth
thenceforth
12,099 corpus weight
- theorised
theorised
12,098 corpus weight
- Thetis
Thetis
12,097 corpus weight
- Tilburg
Tilburg
12,095 corpus weight
- Tillotson
Tillotson
12,094 corpus weight
What this shows Bars show where “Thetis” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | Thetis |
| Language | English |
| Part of speech | Proper noun |
| IPA | /ˈθɛtɪs/ |
| Letters | 6 |
| Frequency rank | #87,904 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “Thetis” sits in English frequency
Rare enough to double-check
Thetis is uncommon English at frequency #87,904 among 27,828 “T” headwords, classed as aproper noun, transcribed /ˈθɛtɪs/. Rarity is why readers land here mid-draft. 2 senses are on record.
Zero misspellings are on record for Thetis in our index, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From Ancient Greek Θέτις (Thétis). The correct English form is Thetis, spelled T-H-E-T-I-S.
Definition
- 1One of the nereids; the mother of Achilles
- 217 Thetis, one of the main belt asteroids.
Etymology
From Ancient Greek Θέτις (Thétis).
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "Thetis", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 6 letters (nearest by frequency 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.