supermax
"supermax" is a 8-letter English headword indexed on PlainSpell.
The verdict
“supermax” is uncommon English (frequency #66,325 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #66,325
- frequency rank, English
- 54,294
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A prison with the highest possible level of security.
| Property | Value |
|---|---|
| Headword | supermax |
| Language | English |
| Part of speech | Noun |
| Letters | 8 |
| Frequency rank | #66,325 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “supermax” sits in English frequency
Rare enough to double-check
supermax is uncommon English at frequency #66,325 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A prison with the highest possible level of security.".
Our edit-distance generator produced no likely misspellings for supermax, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From super- + max (as in maximum security prison). The correct English form is supermax, spelled S-U-P-E-R-M-A-X.
Definition
- 1A prison with the highest possible level of security.
Etymology
From super- + max (as in maximum security prison).
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 "supermax"?
What does "supermax" mean?
What is the origin of the word "supermax"?
Is PlainSpell free to use?
Using “supermax”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-U-P-E-R-M-A-X - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this 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.