on
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
Letters
2 characters
Language
English
word origin
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Detailed reference entry for the English word "on", 2-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 "on" 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 "on" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
on is anEnglishadj. It means: In the state of being active, functioning or operating. Pronounced /ɒn/. It ranks #13 in English word frequency. Often confused with or and op.
| Property | Value |
|---|---|
| Headword | on |
| Language | English |
| Part of speech | Adj |
| IPA | /ɒn/ |
| Letters | 2 |
| Frequency rank | #13 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Frequency rank visualization
Spelling & Dictionary Insight
The English entry for on is 2 letters long, classified as anadj, and transcribed in the International Phonetic Alphabet as /ɒn/. Corpus data places it at rank #13 in overall English word frequency, putting it firmly in the everyday core of the language.Wiktionary records 14 distinct senses for this headword, so context determines which meaning a reader should apply.
No frequent misspelling variants are recorded for on 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: Etymology tree Proto-Indo-European *h₂en-der. Proto-Germanic *an Proto-West Germanic *ana Old English on Middle English on English on From Middle English on, from Old English on, an (“on, upon, onto, in, into”), from Proto-West Germanic *ana, from Proto-Ger… 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 on, spelled O-N, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1In the state of being active, functioning or operating.
- 2Happening; taking place; being or due to be put into action.
- 3Happening; taking place; being or due to be put into action.
- 4Fitted; covering or being worn.
- 5Of a stated part of something, oriented towards the viewer or other specified direction.
- 6Acceptable, appropriate.
- 7Possible; capable of being successfully carried out.
- 8Available; remaining.
- 9Having reached a base as a runner and being positioned there, awaiting further action from a subsequent batter.
- 10Within the half of the field on the same side as the batsman's legs; the left side for a right-handed batsman.
- 11Of a ball, being the next in sequence to be potted, according to the rules of the game.
- 12Acting in character.
- 13Performative or funny in a wearying manner.
- 14Menstruating.
Etymology
Etymology tree Proto-Indo-European *h₂en-der. Proto-Germanic *an Proto-West Germanic *ana Old English on Middle English on English on From Middle English on, from Old English on, an (“on, upon, onto, in, into”), from Proto-West Germanic *ana, from Proto-Germanic *ana (“on, at”), from Proto-Indo-European *h₂en- (“on, onto”). Cognates Cognate with Yola a, an, ana, on (“on”), Saterland Frisian an (“on; at”), West Frisian oan (“on; to, towards”), Cimbrian aan, å (“on, onto”), Dutch aan (“on; at”), Low German an (“on; at, to”), German an (“at, in; on”), Luxembourgish un (“on; at, to”), Yiddish אָן (on, “on, onward”), Danish, Norwegian Nynorsk, and Swedish å (“on”), Elfdalian ą̊ (“on”), Faroese and Icelandic á (“in; on”), Gothic 𐌰𐌽𐌰 (ana, “at, on”); also Umbrian 𐌀𐌌- (am-), 𐌀𐌍- (an-, “up, upon”), Ancient Greek ἀνά (aná, “on, upon”) (whence Greek ανά (aná, “by, through, per”)), Albanian në (“in; on”), Latvian no (“from; out of; for; of; with”), Lithuanian nuo (“from, off; for, of”), Belarusian, Bulgarian, Macedonian, Russian, and Ukrainian на (na, “on”), Czech, Polish, Slovak, and Slovene na (“on”), Serbo-Croatian на, na (“on”), Old Armenian ան- (an-, “at, on, unto”); and from Old Norse upp á: Danish, Norwegian Bokmål, and Swedish på (“on”), Norwegian Nynorsk paa, på (“on”), see upon.
Synonyms
This word in other languages
Frequency rank: #13 in English
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Nearby English words
Other entries that begin with the letter O in our English index: