# on-
## English
### Alternative forms

* a-, an-

### Etymology

From Middle English on-, from Old English on-, an-, from Proto-West Germanic *ana-, from Proto-Germanic *an-, *ana- (“on-”), from Proto-Indo-European *ano-, *nō- (“on”). Cognate with Dutch aan-, German an-, Swedish an-. Doublet of ana-.

### Prefix

on-
* on, at, toward, upon.
    oncome, onset, onfall, onlay

#### Synonyms

* (above): en-, epi-, super-, supra-, sur-, hyper-

#### Derived terms
### Anagrams

* Nº, NO, No, No., N.O., no, no.

## Dutch
### Pronunciation

* Audio:(file)

### Etymology 1

From Middle Dutch on-, from Old Dutch un-, from Proto-West Germanic *un-, from Proto-Germanic *un-, from Proto-Indo-European *n̥-.

#### Prefix

on-
* un-, in- (expresses negation)
* bad, grave, horrifying
    ‎on- + ‎mens (“human being”) → ‎onmens (“brute, barbarian”)
    ‎on- + ‎dier (“animal”) → ‎ondier (“monster”)
    ‎on- + ‎ding (“thing”) → ‎onding (“something unacceptable, absurd”)
    ‎on- + ‎kruid (“herb”) → ‎onkruid (“weed”)
    ‎on- + ‎weer (“weather”) → ‎onweer (“storm, severe weather”)

##### Derived terms

* onaanvaardbaar
* onafhankelijk
* onbedoeld
* onbegeleid
* onbegrip
* onbeheerst
* onbekend
* onbepaald
* onbeweeglijkheid
* onbezonnenheid
* ondiep
* ondode
* onduidelijk
* ongedierte
* ongehoorzaamheid
* ongeletterd
* ongelijkmatig
* ongeluk
* ongeschikt
* ongeschreven
* ongetwijfeld
* ongevaarlijk
* ongewenst
* ongewerveld
* ongewijzigd
* ongunstig
* onkruid
* onlangs
* onmisbaar
* onmogelijk
* onontbeerlijk
* onoverbrugbaar
* onovergankelijk
* onoverwinnelijk
* onpersoonlijk
* onpraktisch
* onrecht
* onschadelijk
* onschuldig
* ontevredenheid
* ontroostbaar
* ontrouw
* onveilig
* onvergelijkbaar
* onverwacht
* onvoltooid
* onvoordelig
* onvrede
* onwaarheid
* onweer
* onwetendheid
* onzeker
* onzijdig
* onzuiverheid

##### Descendants

* Afrikaans: on-
* Petjo: on

### Etymology 2

From Middle Dutch on, from Old Dutch *āna, from Proto-Germanic *ēnu (“without”), from Proto-Indo-European *anew, *enew (“without”).

#### Prefix

on-
* on, without

##### Derived terms
## Japanese
### Romanization

on-
* Rōmaji transcription of おん

## Luxembourgish
### Pronunciation

* IPA: /on/

### Prefix

on-
* un-, in-

#### Derived terms
## Middle Dutch
### Etymology

From Old Dutch un-, from Proto-Germanic *un-, from Proto-Indo-European *n̥-.

### Prefix

on-
* un-, in-

#### Descendants

* Dutch: on-
** Afrikaans: on-
* Limburgish: ón-

## Old English
### Pronunciation

* IPA: /on/

### Etymology 1

From Proto-West Germanic *an-, *ana-, from Proto-Germanic *an, *ana (“on”).

#### Alternative forms

* an-

#### Prefix

on-
* forming verbs and adjectives from participles and nouns, with various senses of on, upon, to, there, thither
    onhlinian ― to lean on
    ondōn ― to don, put on clothes
* (inchoative) in, into; prefix used to intensify an action or to denote origin or initiation
    onlīehtan ― to enlighten
    onstellan, onstiellan ― to establish, institute, install, originate

##### Usage notes

* This is a verbal prefix, and is always unstressed.

##### Derived terms
### Etymology 2

From unstressed form of and- (“and-”).

#### Prefix

on-
* denoting reverse action
    onbindan ― to untie, unbind
    onfealdan ― to unfold
* off, away
    onberan ― to carry off

##### Usage notes

* This is a verbal prefix, and is always unstressed.

##### Derived terms
## Ye'kwana
### Pronunciation

* IPA: [oŋ-]

### Prefix

on-
* allomorph of ön- (negative/sociative irrealis prefix) used for stems that have a first vowel o or u.