combustible
com·bus·ti·ble/kəmˈbʌstɪbəl/adjective, noun
combustible is spelled C-O-M-B-U-S-T-I-B-L-E: 11 letters and 4 syllables (com·bus·ti·ble). It appears about once in every 1 million words in written English, the 34,504th most frequent word form (wordfreq, 2021 data). As an adjective, combustible means “Capable of burning” (English Wiktionary, September 2026).
How many letters and syllables are in combustible?
| Letters | 11: C-O-M-B-U-S-T-I-B-L-E |
|---|---|
| Syllables | 4: com·bus·ti·ble |
| In writing | about once in every 1 million words; the 34,504th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is combustible?
Combustible appears about once in every 1 million words in written English, the 34,504th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce combustible?
- /kəmˈbʌstɪbəl/
- [kəɱˈbʌstʰɪbəl] ~ [kəɱˈbʌstʰɪbl̩]
- /kəmˈbʌstəbəl/
Combustible has 4 syllables, split com·bus·ti·ble in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-combustible.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of combustible
- more combustible comparative
- most combustible superlative
- combustibles plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does combustible mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Capable of burning.
Dumping fertilizer on top of whatever mysterious goop was in the storage tank created a combustible mix which caught fire.
- 2
datedEasily kindled or excited; quick; fiery; irascible.
noun
- 1
A material that is capable of burning.
- 2
A cigarette or a similar product intended for smoking, as opposed to an electronic cigarette.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Combustible in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | combustible |
| German | brennbar, verbrennbar , Brennstoff |
| Portuguese | combustível |
| Spanish | combustible |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does combustible come from?
From Middle French combustible [from combust (past participle of comburir) + -ible] and Latin combustibilis. By surface analysis, combust + -ible.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).