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fly

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

Letters

3 characters

Language

English

word origin

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Detailed reference entry for the English word "fly", 3-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "fly" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "fly" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

fly is aEnglishnoun. It means: Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies. Pronounced /flaɪ/. It ranks #1,827 in English word frequency. Often confused with FM and fu.

Key facts for fly
PropertyValue
Headwordfly
LanguageEnglish
Part of speechNoun
IPA/flaɪ/
Letters3
Frequency rank#1,827
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency rank visualization

Position of fly in English word frequency (lower rank = more common)

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for fly is 3 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /flaɪ/. Corpus data places it at rank #1,827 in overall English word frequency, indicating it appears regularly in written and spoken text.Wiktionary records 10 distinct senses for this headword, so context determines which meaning a reader should apply.

No frequent misspelling variants are recorded for fly in our index, suggesting the orthography either follows predictable English patterns or the word is uncommon enough that typo corpora lack signal.It also participates in 20 confusable-pair relationships, "FM", "fu", "fo", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English flye, flie, from Old English flȳġe, flēoge (“a fly”), from Proto-West Germanic *fleugā, from Proto-Germanic *fleugǭ (“a fly”), from Proto-Indo-European *plewk- (“to fly”). Cognate with Scots flee, Saterland Frisian Fljooge, Dutch vlieg, … Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is fly, spelled F-L-Y, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies.
  2. 2
    Especially, any of the insects of the family Muscidae, such as the common housefly (other families of Diptera include mosquitoes and midges).
  3. 3
    Any similar but not closely related insect, such as a dragonfly, butterfly, or gallfly.
  4. 4
    A lightweight fishing lure resembling an insect.
  5. 5
    A chest exercise performed by moving extended arms from the sides to in front of the chest. (also flye)
  6. 6
    The butterfly stroke (plural is normally flys).
  7. 7
    A witch's familiar.
  8. 8
    A parasite.
  9. 9
    A simple dance in which the hands are shaken in the air, popular in the 1960s.
  10. 10
    A butterfly (combination of four options).

Etymology

From Middle English flye, flie, from Old English flȳġe, flēoge (“a fly”), from Proto-West Germanic *fleugā, from Proto-Germanic *fleugǭ (“a fly”), from Proto-Indo-European *plewk- (“to fly”). Cognate with Scots flee, Saterland Frisian Fljooge, Dutch vlieg, German Low German Fleeg, German Fliege, Danish flue, Norwegian Bokmål flue, Norwegian Nynorsk fluge, Swedish fluga, Icelandic fluga.

This word in other languages

Frequency rank: #1,827 in English

Frequently Asked Questions

How do you spell "fly"?
"fly" is spelled F-L-Y. The IPA pronunciation is /flaɪ/.
What does "fly" mean?
As a noun, "fly" means: Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies.
What words are commonly confused with "fly"?
"fly" is commonly confused with "FM", "fu", "fo". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "fly"?
The IPA (International Phonetic Alphabet) transcription for "fly" is /flaɪ/. 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 "fly"?
From Middle English flye, flie, from Old English flȳġe, flēoge (“a fly”), from Proto-West Germanic *fleugā, from Proto-Germanic *fleugǭ (“a fly”), from Proto-Indo-European *plewk- (“to fly”). Cognate with Scots flee, Saterland Frisian Fljooge, Dut... 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.

Nearby English words

Other entries that begin with the letter F in our English index:

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.