unobtainable
"unobtainable" is a 12-letter English headword indexed on PlainSpell.
The verdict
“unobtainable” is an uncommon English word, ranked #60,541 in English word frequency and used as an adjective.
- #60,541
- frequency rank, English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Unable to be obtained: not able to be acquired or reached.
| Property | Value |
|---|---|
| Headword | unobtainable |
| Language | English |
| Part of speech | Adjective |
| Letters | 12 |
| Frequency rank | #60,541 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “unobtainable” sits in English frequency
Spelling & Dictionary Insight
The English entry for unobtainable is 12 letters long, classified as an adjective. Corpus data places it at rank #60,541 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "Unable to be obtained: not able to be acquired or reached.".
No generated misspelling entries exist for unobtainable in our index, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From un- + obtainable. The correct English form is unobtainable, spelled U-N-O-B-T-A-I-N-A-B-L-E.
Definition
- 1Unable to be obtained: not able to be acquired or reached.
Etymology
From un- + obtainable.
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 “unobtainable”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is U-N-O-B-T-A-I-N-A-B-L-E - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
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.