one
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
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3 characters
Language
English
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Detailed reference entry for the English word "one", 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 "one" 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 "one" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
one is aEnglishnum. It means: The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number. Pronounced /wʌn/. It ranks #38 in English word frequency. Often confused with or and op.
| Property | Value |
|---|---|
| Headword | one |
| Language | English |
| Part of speech | Num |
| IPA | /wʌn/ |
| Letters | 3 |
| Frequency rank | #38 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Frequency rank visualization
Spelling & Dictionary Insight
The English entry for one is 3 letters long, classified as anum, and transcribed in the International Phonetic Alphabet as /wʌn/. Corpus data places it at rank #38 in overall English word frequency, putting it firmly in the everyday core of the language.Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
No frequent misspelling variants are recorded for one 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, "or", "op", "OS", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: PIE word *h₁óynos From Middle English oon, on, oan, an, from Old English ān (“one”), from Proto-West Germanic *ain, from Proto-Germanic *ainaz (“one”), from Proto-Indo-European *h₁óynos (“single, one”). Doublet of an. Cognate with Scots ae, ane, wan, yin (… 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 one, spelled O-N-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.
- 2The first positive number in the set of natural numbers.
- 3The cardinality of the smallest nonempty set.
- 4The ordinality of an element which has no predecessor, usually called first or number one.
Etymology
PIE word *h₁óynos From Middle English oon, on, oan, an, from Old English ān (“one”), from Proto-West Germanic *ain, from Proto-Germanic *ainaz (“one”), from Proto-Indo-European *h₁óynos (“single, one”). Doublet of an. Cognate with Scots ae, ane, wan, yin (“one”); North Frisian ån (“one”); Saterland Frisian aan (“one”); West Frisian ien (“one”); Dutch een, één (“one”); German Low German een; German ein, eins (“one”); Danish en (“one”); Swedish en (“one”); Norwegian Nynorsk ein (“one”), Icelandic einn (“one”); Latin ūnus (“one”) (Old Latin oinos); Russian оди́н (odín), Spanish uno. Doublet of a, an, and Uno. False cognate of Malayalam ഒന്ന് (onnŭ), Tamil ஒன்னு (oṉṉu), ஒண்ணு (oṇṇu), ஒன்று (oṉṟu). The use as an indefinite personal pronoun may have been influenced by unrelated French on, although the Germanic languages widely use cognates for the same sense (usually in non-subject function, but also in subject function, e.g. Luxembourgish een). Verb form from Middle English onen.
This word in other languages
Frequency rank: #38 in English
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Nearby English words
Other entries that begin with the letter O in our English index: