incombustible
/ˌɪŋkəmˈbʌstɪbəl/
"incombustible" is a 13-letter English headword indexed on PlainSpell.
The verdict
“incombustible” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not capable of catching fire and burning; not flammable.
Corpus desk
Index EN-incombustible · incombustible · English
incombustible · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 13 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "I" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | incombustible |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˌɪŋkəmˈbʌstɪbəl/ |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “incombustible” in English
Rare enough to double-check
incombustible is uncommon English outside the top frequency list, classed as anadjective, transcribed /ˌɪŋkəmˈbʌstɪbəl/. Rarity is why readers land here mid-draft. Gloss: "Not capable of catching fire and burning; not flammable.".
incombustible has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From in- + combust + -ible. The correct English form is incombustible, spelled I-N-C-O-M-B-U-S-T-I-B-L-E.
Definition
- 1Not capable of catching fire and burning; not flammable.
Recorded use
Wiktionary exampleThese source excerpts show how incombustible appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The ash represents the more incombustible mineral matter, usually of the nature of clay or slate.
Etymology
From in- + combust + -ible.
Antonyms
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.