MCI
"mci" is a 3-letter English headword indexed on PlainSpell.
The verdict
“MCI” sits in 20 confusable pairs (corpus #40,794) as a noun. The look-alike neighbours are the real trap.
- #40,794
- frequency rank, English
- 4,057
- “M” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of mild cognitive impairment.
Corpus desk
Index EN-mci · MCI · English
MCI · rank #40,794 · 0 variants · 20 confusables
- FREQ-MID #40,794
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH McCaffrey
Nearest frequency peer: McCaffrey (-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 neighbours of confusable “MCI”
Peers at similar corpus weight, separate from look-alike pairs below
- Mahmud
Mahmud
59,211 corpus weight
- McCaffrey
McCaffrey
59,208 corpus weight
- MCI
MCI
59,207 corpus weight
- meld
meld
59,206 corpus weight
- Mendelssohn
Mendelssohn
59,204 corpus weight
- mettle
mettle
59,203 corpus weight
What this shows Bars place “MCI” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | MCI |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #40,794 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “MCI”
Easy to mix with look-alikes
The spelling risk for MCI is neighbouring look-alikes ("my", "ME", …), not just typos; it is anoun. Frequency #40,794 among 4,057 “M” headwords. 3 recorded senses keep meaning in play.
No generated misspelling entries exist for MCI in our index, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "my", "ME", "Mr", and more, where similar look or sound leads writers to substitute one word for another in context.
Our source data has no etymology on file for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is MCI, spelled M-C-I.
Definition
- 1Initialism of mild cognitive impairment.
- 2Initialism of mass casualty incident.
- 3Initialism of meal, combat, individual.
Recorded use
Wiktionary examplesThese source excerpts show how MCI appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Embedded in the controversy surrounding the establishment of specific diagnostic criteria for MCI, there is much debate regarding whether impairment in everyday activities should be included as a criterion.
After an MCI, hospital surge-capacity plans will have to be activated quickly.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "MCI", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).