backfire

/bækˈfaɪə(ɹ)/

//bækˈfaɪə(ɹ)// noun

By · According to Wiktionary data (CC BY-SA) ·

"backfire" is a 8-letter English headword indexed on PlainSpell.

The verdict

“backfire” has 12 generated spelling variants in the English index at frequency #24,988. The variants make it a useful spelling check.

#24,988
frequency rank, English
4,121
“B” headwords
12
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in the wrong direction.

Corpus desk

Index EN-backfire · backfire · English

backfire · rank #24,988 · 12 variants · 2 confusables

  • FREQ-MID #24,988
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 2 pairs
  • VAR-MID 12 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH Bathurst

Nearest frequency peer: Bathurst (+1 rank slots)

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.

Rank peers near misspelling magnet “backfire”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “backfire” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

backfire vs backside
75% similar
backfire vs backline
75% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for backfire
PropertyValue
Headwordbackfire
LanguageEnglish
Part of speechNoun
IPA/bækˈfaɪə(ɹ)/
Letters8
Frequency rank#24,988
Misspellings tracked12
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “backfire”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).backfirelands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “Bathurst” (#24,989), “attaches” (#24,986), “Belinda” (#24,990). Among 4,121 “B” headwords, “backfire” is #24,988. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 12 spelling variants around backfire (IPA /bækˈfaɪə(ɹ)/), anoun. Corpus frequency is #24,988 among 4,121 “B” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 12 likely wrong-spelling variants for backfire, with forms such as "abckfire", "bacckfire", and "bacfkire". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 2 confusable-pair relationships, "backside", "backline", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From back + fire. The correct English form is backfire, spelled B-A-C-K-F-I-R-E.

Definition

  1. 1
    A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in the wrong direction.
  2. 2
    An explosion in the exhaust passages of an internal combustion engine.
  3. 3
    An explosion in other equipment.
  4. 4
    Alternative form of back fire.

Recorded use

Wiktionary examples

These source excerpts show how backfire appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. As much of Seattle tries to sleep, the Hellcat supercar goes on the prowl, the howls of its engine and the explosive backfires from its tailpipes echoing off the high-rise towers downtown.
  2. The chief causes of rectifier backfiring in the Glasgow units were overheating or unfavourable anode/cathode temperature differential; it has proved possible to overcome these, although occasional backfires do still occur.

Etymology

From back + fire.

Synonyms

knockping

Common misspellings

Also misspelled as:

  • abckfire
  • bacckfire
  • bacfkire
  • backffire
  • backfier
  • backfirre
  • backfrie
  • backifre
  • backkfire
  • bakcfire
  • bbackfire
  • bcakfire

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of backfire - 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.

abckfire2bacckfire1bacfkire2backffire1backfier2backfirre1backfrie2backifre2
Edit distance from "backfire"

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 "backfire"?
"backfire" is spelled B-A-C-K-F-I-R-E. The IPA pronunciation is /bækˈfaɪə(ɹ)/.
What does "backfire" mean?
As a noun, "backfire" means: A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in the wrong direction.
What words are commonly confused with "backfire"?
"backfire" is commonly confused with "backside", "backline". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "backfire"?
The IPA (International Phonetic Alphabet) transcription for "backfire" is /bækˈfaɪə(ɹ)/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "backfire"?
From back + fire. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "backfire", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

Bathurst#24,989attaches#24,986bookshop#24,994brooding#25,000

Similar misspelling depth

Headwords with a similar count of attested misspellings (12 here; floor ≥5).

Cochrane12 variantswondrous12 variantswhomever12 variantscyclops12 variants

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list