unchallengeable
"unchallengeable" is a 15-letter English headword indexed on PlainSpell.
The verdict
“unchallengeable” is uncommon English (outside the top frequency list), classed as an adjective. 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) - Not open to challenge; indisputable
Corpus desk
Index EN-unchallengeable · unchallengeable · English
unchallengeable · 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 "U" 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 | unchallengeable |
| Language | English |
| Part of speech | Adjective |
| Letters | 15 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “unchallengeable” in English
Rare enough to double-check
unchallengeable is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Not open to challenge; indisputable".
The misspelling generator found no plausible variants for unchallengeable, which points to an orthography that plays by predictable English rules. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From un- + challengeable. The correct English form is unchallengeable, spelled U-N-C-H-A-L-L-E-N-G-E-A-B-L-E.
Definition
- 1Not open to challenge; indisputable
Recorded use
Wiktionary examplesThese source excerpts show how unchallengeable appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
A century ago, a very distinguished Swiss military writer, who saw much service throughout the Napoleonic period, who studied minutely many of the principal campaigns, and who reflected profoundly upon international relations as affecting war, and as affected by it, stated as a fundamental necessity of the European Balance of Power that no one State shoul…
With a solemn imprecation on the formality and absurdity of the writer, Lord Etherington let the letter of advice drop from his hand into the fire, and throwing himself into a chair, passed his hand across his eyes, as if their very power of sight bad been blighted by what he had read. His title, and his paternal fortune, which he thought but an instant b…
Etymology
From un- + challengeable.
Synonyms
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.