mentally ill
"mentally-ill" is a 11-letter English headword indexed on PlainSpell.
The verdict
“mentally ill” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Having a psychological disorder.
Corpus desk
Index EN-mentally-ill · mentally ill · English
mentally ill · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 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 | mentally ill |
| Language | English |
| Part of speech | Adjective |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “mentally ill” in English
Rare enough to double-check
mentally ill is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Having a psychological disorder.".
No misspelling variants are generated for mentally ill in our index, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
This entry carries no recorded etymology, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is mentally ill, spelled M-E-N-T-A-L-L-Y- -I-L-L.
Definition
- 1Having a psychological disorder.
Recorded use
Wiktionary exampleThese source excerpts show how mentally ill appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The mentally ill are to be part of the assisted dying debate.
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.