concussion
/kənˈkʌʃən/
"concussion" is a 10-letter English headword indexed on PlainSpell.
The verdict
“concussion” is a moderately-common English word, ranked #13,689 in English word frequency and used as a noun.
- #13,689
- frequency rank, English
- 10
- letters
- 14
- tracked misspellings
- 4
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A violent collision or shock.
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 | concussion |
| Language | English |
| Part of speech | Noun |
| IPA | /kənˈkʌʃən/ |
| Letters | 10 |
| Frequency rank | #13,689 |
| Misspellings tracked | 14 |
| Confusable pairs | 4 |
| Source | Wiktionary (kaikki.org) |
Where “concussion” sits in English frequency
Spelling & Dictionary Insight
The English entry for concussion is 10 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /kənˈkʌʃən/. Corpus data places it at rank #13,689 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 14 likely wrong-spelling variants for concussion, with forms such as "cconcussion", "cnocussion", and "cocnussion". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 4 confusable-pair relationships, "confusion", "confession", "conclusion", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From Latin concussiō. Equivalent to concuss + -ion. The correct English form is concussion, spelled C-O-N-C-U-S-S-I-O-N.
Definition
- 1A violent collision or shock.
- 2An injury to part of the body, most especially the brain, caused by a violent blow, followed by loss of function.
- 3The unlawful forcing of another by threats of violence to yield up something of value.
Etymology
From Latin concussiō. Equivalent to concuss + -ion.
This word in other languages
Common misspellings
Also misspelled as: cconcussion,cnocussion,cocnussion,conccussion,concsusion,concusion,concusison,concussino,concussionn,concussoin,concustion,conncussion,conucssion,ocncussion
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of concussion - 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
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Using “concussion”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-O-N-C-U-S-S-I-O-N - every other letter order is a misspelling in standard orthography.
- Say it as /kənˈkʌʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “confusion” - see the side-by-side comparison. concussion vs confusion
- Browse more English words and confusable pairs in the same reference. English words
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.