flag

/ˈflæɡ/

//ˈflæɡ// noun

"flag" is a 4-letter English headword indexed on PlainSpell.

The verdict

“flag” is a regularly-used English word, ranked #2,577 in English word frequency and used as a noun.

#2,577
frequency rank, English
4
letters
5
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A piece of cloth, often decorated with an emblem, used as a visual signal or symbol.

Visual similarity to commonly confused words

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

flag vs fly
50% similar
flag vs flu
50% similar
flag vs fog
50% similar

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

Key facts for flag
PropertyValue
Headwordflag
LanguageEnglish
Part of speechNoun
IPA/ˈflæɡ/
Letters4
Frequency rank#2,577
Misspellings tracked5
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “flag” 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). flag 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 flag is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈflæɡ/. Corpus data places it at rank #2,577 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 15 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 5 likely wrong-spelling variants for flag, with forms such as "falg", "fflag", and "flga". 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, "fly", "flu", "fog", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: From Middle English flag, flagge (“flag”), further etymology uncertain. Perhaps from or related to early Middle English flage (name for a baby's garment) and Old English flagg, flacg (“cataplasm, poultice, plaster”). Or, perhaps ultimately imitative, or oth… The correct English form is flag, spelled F-L-A-G.

Definition

  1. 1
    A piece of cloth, often decorated with an emblem, used as a visual signal or symbol.
  2. 2
    The design that could be placed on a flag, typically a rectangular graphic that is used to represent an entity (like a country, organisation or group of people) or an idea.
  3. 3
    A flag flown by a ship to show the presence on board of the admiral; the admiral himself, or his flagship.
  4. 4
    A signal flag.
  5. 5
    The use of a flag, especially to indicate the start of a race or other event.
  6. 6
    A variable or memory location that stores a Boolean true-or-false, yes-or-no value, typically either recording the fact that a certain event has occurred or requesting that a certain optional action take place.
  7. 7
    In a command line interface, a command parameter requesting optional behavior or otherwise modifying the action of the command being invoked.
  8. 8
    A mechanical indicator that pops up to draw the pilot's attention to a problem or malfunction.
  9. 9
    The game of capture the flag.
  10. 10
    A sequence of faces of a given polytope, one of each dimension up to that of the polytope (formally, though in practice not always explicitly, including the null face and the polytope itself), such that each face in the sequence is part of the next-higher dimension face.
  11. 11
    A sequence of subspaces of a vector space, beginning with the null space and ending with the vector space itself, such that each member of the sequence (until the last) is a proper subspace of the next.
  12. 12
    A dark piece of material that can be mounted on a stand to block or shape the light.
  13. 13
    An apron.
  14. 14
    An indication that a certain outcome or event is going to happen, deduced not logically or causally, but as a pattern in a piece of media. Chiefly used in video games and adjacent media, especially visual novels, it is typically described as being raised or set by the plot or words of a character.
  15. 15
    A groat; fourpence.

Etymology

From Middle English flag, flagge (“flag”), further etymology uncertain. Perhaps from or related to early Middle English flage (name for a baby's garment) and Old English flagg, flacg (“cataplasm, poultice, plaster”). Or, perhaps ultimately imitative, or otherwise drawn from Proto-Germanic *flaką (“something flat”), from Proto-Indo-European *pleh₂- (“flat, broad, plain”), referring to the shape. Germanic cognates include Saterland Frisian Flaage (“flag”), West Frisian flagge (“flag”), Dutch vlag (“flag”), German Flagge (“flag”), Swedish flagga (“flag”), Danish flag (“flag, ship's flag”). Compare also Middle English flacken (“to flutter, palpitate”), Swedish dialectal flage (“to flutter in the wind”), Old Norse flögra (“to flap about”). Akin to Old High German flogarōn (“to flutter”), Old High German flogezen (“to flutter, flicker”), Middle English flakeren (“to move quickly to and fro”), Old English flacor (“fluttering, flying”). More at flack, flacker.

Synonyms

This word in other languages

Common misspellings

Also misspelled as: falg,fflag,flga,fllag,lfag

Misspelling Pattern Breakdown

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

falg2fflag1flga2fllag1lfag2
Edit distance from "flag"

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 "flag"?
"flag" is spelled F-L-A-G. The IPA pronunciation is /ˈflæɡ/.
What does "flag" mean?
As a noun, "flag" means: A piece of cloth, often decorated with an emblem, used as a visual signal or symbol.
What words are commonly confused with "flag"?
"flag" is commonly confused with "fly", "flu", "fog". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "flag"?
The IPA (International Phonetic Alphabet) transcription for "flag" is /ˈflæɡ/. 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 "flag"?
From Middle English flag, flagge (“flag”), further etymology uncertain. Perhaps from or related to early Middle English flage (name for a baby's garment) and Old English flagg, flacg (“cataplasm, poultice, plaster”). Or, perhaps ultimately imitati... 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 “flag”

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

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