flash

/flæʃ/

//flæʃ// verb

"flash" is a 5-letter English headword indexed on PlainSpell.

The verdict

“flash” is a regularly-used English word, ranked #3,299 in English word frequency and used as a verb.

#3,299
frequency rank, English
5
letters
8
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To cause to shine briefly or intermittently.

Visual similarity to commonly confused words

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

flash vs flat
60% similar
flash vs flaw
60% similar
flash vs flax
60% similar

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

Key facts for flash
PropertyValue
Headwordflash
LanguageEnglish
Part of speechVerb
IPA/flæʃ/
Letters5
Frequency rank#3,299
Misspellings tracked8
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “flash” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). flash lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for flash is 5 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as /flæʃ/. Corpus data places it at rank #3,299 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 22 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 8 likely wrong-spelling variants for flash, with forms such as "falsh", "fflash", and "flahs". 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 20 confusable-pair relationships, "flat", "flaw", "flax", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: In some senses, from Middle English flasshen, a variant of flasken, flaskien (“to sprinkle, splash”), which was likely of imitative origin; in other senses probably of North Germanic origin akin to Swedish dialectal flasa (“to burn brightly, blaze”), relate… The correct English form is flash, spelled F-L-A-S-H.

Definition

  1. 1
    To cause to shine briefly or intermittently.
  2. 2
    To blink; to shine or illuminate intermittently.
  3. 3
    To be visible briefly.
  4. 4
    To make visible briefly.
  5. 5
    To expose one's intimate body part or undergarment, often momentarily and unintentionally. (Contrast streak.)
  6. 6
    To break forth like a sudden flood of light; to show a momentary brilliance.
  7. 7
    To flaunt; to display in a showy manner.
  8. 8
    To communicate quickly.
  9. 9
    To move, or cause to move, suddenly.
  10. 10
    To telephone a person, only allowing the phone to ring once, in order to request a call back.
  11. 11
    To evaporate suddenly. (See flash evaporation.)
  12. 12
    To climb (a route) successfully on the first attempt.
  13. 13
    To write to the memory of (an updatable component such as a BIOS chip or games cartridge).
  14. 14
    To cover with a thin layer, as objects of glass with glass of a different colour.
  15. 15
    To expand (blown glass) into a disc.
  16. 16
    To send by some startling or sudden means.
  17. 17
    To burst out into violence.
  18. 18
    To perform a flash.
  19. 19
    To release the pressure from a pressurized vessel.
  20. 20
    To trick up in a showy manner.
  21. 21
    To strike and throw up large bodies of water from the surface; to splash.
  22. 22
    To flash back.

Etymology

In some senses, from Middle English flasshen, a variant of flasken, flaskien (“to sprinkle, splash”), which was likely of imitative origin; in other senses probably of North Germanic origin akin to Swedish dialectal flasa (“to burn brightly, blaze”), related to flare. Compare also Icelandic flasa (“to rush, go hastily”).

Synonyms

This word in other languages

Common misspellings

Also misspelled as: falsh,fflash,flahs,flashh,flassh,fllash,flsah,lfash

Misspelling Pattern Breakdown

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

falsh2fflash1flahs2flashh1flassh1fllash1flsah2lfash2
Edit distance from "flash"

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 "flash"?
"flash" is spelled F-L-A-S-H. The IPA pronunciation is /flæʃ/.
What does "flash" mean?
As a verb, "flash" means: To cause to shine briefly or intermittently.
What words are commonly confused with "flash"?
"flash" is commonly confused with "flat", "flaw", "flax". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "flash"?
The IPA (International Phonetic Alphabet) transcription for "flash" is /flæʃ/. 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 "flash"?
In some senses, from Middle English flasshen, a variant of flasken, flaskien (“to sprinkle, splash”), which was likely of imitative origin; in other senses probably of North Germanic origin akin to Swedish dialectal flasa (“to burn brightly, blaze... 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.

Using “flash”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-L-A-S-H - every other letter order is a misspelling in standard orthography.
  • Say it as /flæʃ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “flat” - see the side-by-side comparison. flash vs flat
  • 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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list