con-

From the Latin prefix con-, from cum (“with”).

con-

1. (non-productive) used with certain words to add a notion similar to those conveyed by with, together, or joint

   congenial, congregation, console, consonant, construct, converge, etc.

2. (non-productive) used with certain words to intensify their meaning

   confirm

Con- becomes

col- before l: collaborate;

com- before b, m, and p: combat, commit, compel;

cor- before r: correlation;

It can also appear as co-: coexistence, cosine.

Back-formation from conlang, short for "constructed language".

con-

1. attached to certain words to obtain new, informal, subcultural words in which con- conveys a notion of:
   1. constructed, artificial
   2. hypothetical, fictional
   3. related to conlangs, conworlds, etc.

• CNO, NCO, NOC, OCN, ONC, onc

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con-

1. con- (1)

From preposition cum (“with”).

• (Classical) IPA^(key): /kon/, [kɔn]

con-

1. Used in compounds to indicate a being or bringing together of several objects

   coeō, colloquor, convīvor, etc.: colligō, compōnō, condō, etc.

2. Used in compounds to indicate the completeness, perfecting of any act, and thus gives intensity to the signification of the simple word

   commaculō, commendō, concitō, comminuō, concerpō, concīdō, convellō, etc.

• Before vowels and h, the prefix becomes co-, or rarely com-. Excluded are i and u when these represent /j/ and /w/.
• Before b, m and p, the prefix becomes com-.
• Before l, the prefix becomes col-.
• Before r, the prefix becomes cor-.
• Before n, the prefix becomes cō- (or remains con-, in Late Latin).
• Before original gn, the prefix becomes co- and gn is not reduced to n.

As usual in Latin phonology, the sequences ons and onf are pronounced with nasalised long vowels, and the vowel is written with a macron, i.e. cōnspīrō and cōnferō.

• con- in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers

• co-
• com-

From the Latin prefix con-, from cum (“with”).

con-

1. with

Before the letters b or p use the form com-. Sometimes the co- form is used instead.

• conjuntar
• coetáneo
• coacusado