and-

• an-, on-

From Middle English and-, ond-, from Old English and-, ond- (“against, back”), from Proto-Germanic *and-, *anda-, *andi- (“across, opposite, against, away”), from Proto-Indo-European *h₂énti (“across, forth”), from Proto-Indo-European *h₂ent- (“forehead, foreside, end, limit”). Cognate with Dutch ont-, German ant-, ent-, emp-, Icelandic and-, Gothic 𐌰𐌽𐌳- (and-), Latin ante (“before”), Ancient Greek ἀντί (antí, “against”).

and-

1. (no longer productive) A prefix of Old English origin meaning "against", "back", "in return", "away", represented in Modern English by a-, an-, on-, and in altered form by the reverse-action prefix un- (e.g. unbuckle). Also as the initial letter d in dread (< Old English ondrǣdan).

   along

   answer

   onfang

   onset

• and- in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

• ADN, DAN, DNA, Dan, Dan., NAD, NDA, dan, dna, nad

and-

1. Romanization of 𐌰𐌽𐌳-

From Old Norse and-.

and-

1. anti-, against, opposing

From Old Norse and-, from Proto-Germanic *anda-, *andi-. Ultimately from Proto-Indo-European *h₂ent- (“face, front”).

and-

1. against, opposite

• “and-” in The Nynorsk Dictionary.

• ond-, an-, on-

From Proto-Germanic *andi-, representive of a combining form of and (“and”). Cognate with Middle Dutch ont- (Dutch ont-), Old High German ant- (German ant-, ent-), Old Norse and- (Icelandic and- (“against, anti-, opposed to, in the face of”), Swedish an-), Gothic 𐌰𐌽𐌳- (and-).

• IPA^(key): /ˈɑnd/

This prefix was usually stressed; when unstressed, it weakened to an-, on-, also a-.

and-

1. forming compounds words with the sense "against, opposing"; opposition

   andsaca (“opponent, adversary”)

2. in return, back

   andswaru "answer, reply"

3. facing, toward; completely, fully

   andweard "present time"

   andlang "entire, continuous"

   andweorc (“substance, matter, cause”); andleofen, andleofa (“nourishment, sustenance”)

4. without

• ⁊ (symbol)

From Proto-Germanic *anda-, *andi-. Ultimately from Proto-Indo-European *h₂ent- (“face, forehead, front”).

and-

1. denotes whatever is opposite, against, towards

   ‎and- + ‎vitni (“testimony”) → ‎andvitni (“contradictory testimony”)

2. (by extension) hostile, adverse

The spellings an- or ann- are often used in compounds.

• and- in A Concise Dictionary of Old Icelandic, G. T. Zoëga, Clarendon Press, 1910, at Internet Archive.

From Proto-Germanic *andi-.

• IPA^(key): /ˈɑnd/

and-

1. forming compound words with the sense "against, opposing"; opposition

   andsako (“enemy, adversary”)

2. in return, back

   andswor "answer"

3. facing, toward; completely, fully

   andward "present time"

4. without