mental illness
"mental-illness" is a 13-letter English headword indexed on PlainSpell.
The verdict
“mental illness” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 14
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The property of being mentally ill; mental disorders taken as a whole.
Corpus desk
Index EN-mental-illness · mental illness · English
mental illness · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 14 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "M" 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 | mental illness |
| Language | English |
| Part of speech | Noun |
| Letters | 14 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “mental illness” in English
Rare enough to double-check
mental illness is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
No generated misspelling entries exist for mental illness in our index, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
No explicit etymology string is stored for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is mental illness, spelled M-E-N-T-A-L- -I-L-L-N-E-S-S.
Definition
- 1The property of being mentally ill; mental disorders taken as a whole.
- 2A mental disorder.
Recorded use
Wiktionary examplesThese source excerpts show how mental illness appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Such studies show that geniuses are not any more likely to suffer from mental illness than the rest of us.
Epilepsy is not a mental illness. It is caused by electrical changes in the brain.
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). See the methodology for how each field is sourced and updated.