unsustainable
"unsustainable" is a 13-letter English headword indexed on PlainSpell.
The verdict
“unsustainable” has 20 generated spelling variants in the English index at frequency #24,048. The variants make it a useful spelling check.
- #24,048
- frequency rank, English
- 1,433
- “U” headwords
- 20
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not sustainable.
Corpus desk
Index EN-unsustainable · unsustainable · English
unsustainable · rank #24,048 · 20 variants · 0 confusables
- FREQ-MID #24,048
- LEN-MEGA 13 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-HIGH 20 variants
- BOOK-MID 1,433
- PHOTO-FINISH unsecured
Nearest frequency peer: unsecured (-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 “unsustainable”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- unifying
unifying
75,957 corpus weight
- unimaginable
unimaginable
75,956 corpus weight
- unites
unites
75,955 corpus weight
- unsecured
unsecured
75,954 corpus weight
- unsustainab…
unsustainable
75,953 corpus weight
- utopian
utopian
75,951 corpus weight
What this shows Bars show where “unsustainable” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | unsustainable |
| Language | English |
| Part of speech | Adjective |
| Letters | 13 |
| Frequency rank | #24,048 |
| Misspellings tracked | 20 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “unsustainable” sits in English frequency
A misspelling magnet
The generator records 20 spelling variants around unsustainable, anadjective. Corpus frequency is #24,048 among 1,433 “U” headwords. Dominant gloss: "Not sustainable.".
Our generated misspelling index lists 20 likely wrong-spelling variants for unsustainable, with forms such as "nusustainable", "unnsustainable", and "unssustainable". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. Our confusable-pair dataset has no match for it, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From un- + sustainable. The correct English form is unsustainable, spelled U-N-S-U-S-T-A-I-N-A-B-L-E.
Definition
- 1Not sustainable.
Recorded use
Wiktionary examplesThese source excerpts show how unsustainable appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
You don't have to be Einstein to work out that this level of government subsidy is unsustainable.
RTDs cover a multitude of sips, including: “hard” or “spiked” teas, coffees, kombuchas and seltzers; […]. And although the sector was birthed in the ’30s by drinks like Campari Soda, and boomed in the ’90s with Bacardi Breezer and Smirnoff Ice, RTDs are now at a point of seemingly unsustainable saturation.
Etymology
From un- + sustainable.
This word in other languages
Common misspellings
Also misspelled as:
- nusustainable
- unnsustainable
- unssustainable
- unssutainable
- unsusatinable
- unsusstainable
- unsustaianble
- unsustainabble
- unsustainabel
- unsustainablle
- unsustainalbe
- unsustainbale
- unsustainible
- unsustainnable
- unsustaniable
- unsustianable
- unsusttainable
- unsutsainable
- unusstainable
- usnustainable
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of unsustainable - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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
How do you spell "unsustainable"?
What does "unsustainable" mean?
What are common misspellings of "unsustainable"?
What is the origin of the word "unsustainable"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "unsustainable", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 13 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (20 here; floor ≥5).
What to do next
You've looked up "unsustainable". Here's where to go from here.
- 20 edit-distance misspelling variants are generated for spell-check research on this headword. See variants
- Usage frequency rank #24,048 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "U" letter cohort. U–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.