treacherousness
"treacherousness" is a 15-letter English headword indexed on PlainSpell.
The verdict
“treacherousness” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 15
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Treachery; the characteristic of being treacherous.
Corpus desk
Index EN-treacherousness · treacherousness · English
treacherousness · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 15 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "T" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | treacherousness |
| Language | English |
| Part of speech | Noun |
| Letters | 15 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “treacherousness” in English
Rare enough to double-check
treacherousness is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Treachery; the characteristic of being treacherous.".
Zero misspellings are on record for treacherousness in our index, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From treacherous + -ness. The correct English form is treacherousness, spelled T-R-E-A-C-H-E-R-O-U-S-N-E-S-S.
Definition
- 1Treachery; the characteristic of being treacherous.
Recorded use
Wiktionary exampleThese source excerpts show how treacherousness appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
He had an aggressive treacherousness of eye which his potations had not subdued.
Etymology
From treacherous + -ness.
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.