fun
/fʌn/
"fun" is a 3-letter English headword indexed on PlainSpell.
The verdict
“fun” is in the everyday core of English, ranked #502 in English word frequency and used as a noun.
- #502
- frequency rank, English
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Amusement, enjoyment or pleasure.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | fun |
| Language | English |
| Part of speech | Noun |
| IPA | /fʌn/ |
| Letters | 3 |
| Frequency rank | #502 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “fun” sits in English frequency
Spelling & Dictionary Insight
The English entry for fun is 3 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /fʌn/. Corpus data places it at rank #502 in overall English word frequency, putting it firmly in the everyday core of the language. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
No misspelling variants are generated for fun in our index, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "FW", "fy", "fur", 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 fonne, fon (“foolish, simple, silly”) or fonnen (“make a fool of”), from Middle English fonne (“a fool, dupe”), probably of North Germanic origin, related to Swedish fånig (“foolish”), Swedish fåne (“a fool”), from Old Norse fáni (“vain … The correct English form is fun, spelled F-U-N.
Definition
- 1Amusement, enjoyment or pleasure.
- 2Playful, often noisy, activity.
Etymology
From Middle English fonne, fon (“foolish, simple, silly”) or fonnen (“make a fool of”), from Middle English fonne (“a fool, dupe”), probably of North Germanic origin, related to Swedish fånig (“foolish”), Swedish fåne (“a fool”), from Old Norse fáni (“vain person, swaggerer”), but of unknown ultimate origin. Perhaps related to or influenced by fjäll (“rock, cliff, mountain”). Compare also English fumble, Norwegian Nynorsk fomme (“clumsy fool”). Compare also Norwegian fomme, fume (“a fool”). More at fon, fond. As a noun, fun is recorded from 1700, with a meaning “a cheat, trick, hoax”, from a verb fun meaning “to cheat, trick” (1680s). The meaning “diversion, amusement” dates to the 1720s. The older meaning is preserved in the phrase to make fun of (1737) and in usage of the adjective funny. The use of fun as adjective is newest and is due to reanalysis of the noun; this was incipient in the mid-19th century. Alternative etymology connected Middle English fonne with Old Frisian fonna, fone, fomne, variant forms of fāmne, fēmne (“young woman, virgin”), from Proto-West Germanic *faimnijā, from Proto-Germanic *faimnijǭ (“maiden”), from Proto-Indo-European *peymen- (“girl”), *poymen- (“breast milk”). If so, then cognate with Old English fǣmne (“maid, virgin, damsel, bride”), West Frisian famke (“girl”), Saterland Frisian fone, fon (“woman, maid, servant," also "weakling, simpleton”).
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); 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
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Using “fun”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is F-U-N - every other letter order is a misspelling in standard orthography.
- Say it as /fʌn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “FW” - see the side-by-side comparison. fun vs FW
- 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.