on-

• a-, an-

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-.

on-

1. on, at, toward, upon.

   oncome, onset, onfall, onlay

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

• Nº, NO, No, No., N.O., no, no.

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

on-

1. un-, in- (expresses negation)
2. 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”)

• Afrikaans: on-
• Petjo: on

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

on-

1. on, without

• IPA^(key): /on/

on-

1. un-, in-

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

on-

1. un-, in-

• Dutch: on-
  • Afrikaans: on-
• Limburgish: ón-

• IPA^(key): /on/

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

• an-

on-

1. 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

2. (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

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

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

on-

1. denoting reverse action

   onbindan ― to untie, unbind

   onfealdan ― to unfold

2. off, away

   onberan ― to carry off

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

• IPA^(key): [on-]

on-

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