concave
/ˈkɒn.keɪv/
"concave" is a 7-letter English headword indexed on PlainSpell.
The verdict
“concave” is a moderately-common English word, ranked #28,155 in English word frequency and used as an adjective.
- #28,155
- frequency rank, English
- 7
- letters
- 10
- tracked misspellings
- 4
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Curved like the inner surface of a sphere or bowl.
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 | concave |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈkɒn.keɪv/ |
| Letters | 7 |
| Frequency rank | #28,155 |
| Misspellings tracked | 10 |
| Confusable pairs | 4 |
| Source | Wiktionary (kaikki.org) |
Where “concave” sits in English frequency
Spelling & Dictionary Insight
The English entry for concave is 7 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈkɒn.keɪv/. Corpus data places it at rank #28,155 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 10 likely wrong-spelling variants for concave, with forms such as "cconcave", "cnocave", and "cocnave". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 4 confusable-pair relationships, "concede", "concise", "conceive", 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 Middle English concave, from Old French concave, from Latin concavus. The correct English form is concave, spelled C-O-N-C-A-V-E.
Definition
- 1Curved like the inner surface of a sphere or bowl.
- 2Not convex; having at least one internal angle greater than 180 degrees.
- 3Satisfying the property that all segments connecting two points on the function's graph lie below the function.
- 4Hollow; empty.
Etymology
From Middle English concave, from Old French concave, from Latin concavus.
Synonyms
Antonyms
This word in other languages
Common misspellings
Also misspelled as: cconcave,cnocave,cocnave,conacve,concaev,concavve,conccave,concvae,conncave,ocncave
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of concave - 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
How do you spell "concave"?
What does "concave" mean?
What words are commonly confused with "concave"?
How do you pronounce "concave"?
What is the origin of the word "concave"?
Is PlainSpell free to use?
Using “concave”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-O-N-C-A-V-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈkɒn.keɪv/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “concede” - see the side-by-side comparison. concave vs concede
- 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.