combustible
/kəmˈbʌstɪbəl/
"combustible" is a 11-letter English headword indexed on PlainSpell.
The verdict
“combustible” is a moderately-common English word, ranked #34,436 in English word frequency and used as an adjective.
- #34,436
- frequency rank, English
- 11
- letters
- 18
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Capable of burning.
| Property | Value |
|---|---|
| Headword | combustible |
| Language | English |
| Part of speech | Adjective |
| IPA | /kəmˈbʌstɪbəl/ |
| Letters | 11 |
| Frequency rank | #34,436 |
| Misspellings tracked | 18 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “combustible” sits in English frequency
Spelling & Dictionary Insight
The English entry for combustible is 11 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /kəmˈbʌstɪbəl/. Corpus data places it at rank #34,436 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 18 likely wrong-spelling variants for combustible, with forms such as "ccombustible", "cmobustible", and "cobmustible". 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. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From Middle French combustible, equivalent to combust + -ible. The correct English form is combustible, spelled C-O-M-B-U-S-T-I-B-L-E.
Definition
- 1Capable of burning.
- 2Easily kindled or excited; quick; fiery; irascible.
Etymology
From Middle French combustible, equivalent to combust + -ible.
This word in other languages
Common misspellings
Also misspelled as: ccombustible,cmobustible,cobmustible,combbustible,combsutible,combusitble,combusstible,combustable,combustbile,combustibble,combustibel,combustiblle,combustilbe,combusttible,combutsible,commbustible,comubstible,ocmbustible
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of combustible - 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 "combustible"?
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Using “combustible”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-O-M-B-U-S-T-I-B-L-E - every other letter order is a misspelling in standard orthography.
- Say it as /kəmˈbʌstɪbəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.