con

1
[ kon ]
/ kɒn /

adverb

against a proposition, opinion, etc.: arguments pro and con.

noun

the argument, position, arguer, or voter against something.
Compare pro1.

Origin of con

1
1575–85; short for Latin contrā in opposition, against

Definition for con (2 of 10)

con2
[ kon ]
/ kɒn /

verb (used with object), conned, con·ning.

to learn; study; peruse or examine carefully.
to commit to memory.

Origin of con

2
before 1000; Middle English cunnen, Old English cunnan variant of can1 in sense “become acquainted with, learn to know”

Definition for con (3 of 10)

con3

or conn

[ kon ]
/ kɒn /
Nautical

verb (used with object), conned, con·ning.

to direct the steering of (a ship).

noun

the station of the person who cons.
the act of conning.

Origin of con

3
1350–1400; earlier cond, apocopated variant of Middle English condie, condue < Middle French cond(u)ire < Latin condūcere to conduct

Definition for con (4 of 10)

con4
[ kon ]
/ kɒn /
Informal.

adjective

involving abuse of confidence: a con trick.

verb (used with object), conned, con·ning.

to swindle; trick: That crook conned me out of all my savings.
to persuade by deception, cajolery, etc.

noun

a confidence game or swindle.
a lie, exaggeration, or glib self-serving talk: He had a dozen different cons for getting out of paying traffic tickets.

Origin of con

4
1895–1900, Americanism; by shortening of confidence

Definition for con (5 of 10)

con5
[ kon ]
/ kɒn /

noun Informal.

a convention, especially one for fans of a particular type of popular culture: sci-fi, gaming, and anime cons.

Origin of con

5
First recorded in 1940–45; by shortening

Definition for con (6 of 10)

con6
[ kon ]
/ kɒn /

noun Slang.

a convict.

Origin of con

6
First recorded in 1715–25; by shortening

Definition for con (7 of 10)

con7
[ kon ]
/ kɒn /

verb (used with object), conned, con·ning. British Dialect.

to strike, hit, or rap (something or someone).
to hammer (a nail or peg).
to beat or thrash a person with the hands or a weapon.

Origin of con

7
1890–95; perhaps akin to French cognée hatchet, cogner to knock in, drive (a nail) home

Definition for con (8 of 10)

con-

variant of com- before a consonant (except b, h, l, p, r) and, by assimilation, before n: convene; condone; connection.

Origin of con-

From Latin

Definition for con (9 of 10)

Origin of con.

From the Latin word contrā

Definition for con (10 of 10)

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for con

British Dictionary definitions for con (1 of 8)

con1
/ (kɒn) informal /

noun

  1. short for confidence trick
  2. (as modifier)con man

verb cons, conning or conned

(tr) to swindle or defraud

Word Origin for con

C19: from confidence

British Dictionary definitions for con (2 of 8)

con2
/ (kɒn) /

noun (usually plural)

an argument or vote against a proposal, motion, etc
a person who argues or votes against a proposal, motion, etc
Compare pro 1See also pros and cons

Word Origin for con

from Latin contrā against, opposed to

British Dictionary definitions for con (3 of 8)

con3
/ (kɒn) /

noun

slang short for convict

British Dictionary definitions for con (4 of 8)

con4

esp US conn

nautical

verb cons, conns, conning or conned

(tr) to direct the steering of (a vessel)

noun

the place where a person who cons a vessel is stationed

Word Origin for con

C17 cun, from earlier condien to guide, from Old French conduire, from Latin condūcere; see conduct

British Dictionary definitions for con (5 of 8)

con5
/ (kɒn) /

verb cons, conning or conned

(tr) archaic to study attentively or learn (esp in the phrase con by rote)

Word Origin for con

C15: variant of can 1 in the sense: to come to know

British Dictionary definitions for con (6 of 8)

con6
/ (kɒn) /

preposition

music with

Word Origin for con

Italian

British Dictionary definitions for con (7 of 8)

con-

prefix

a variant of com-

British Dictionary definitions for con (8 of 8)

Con.

abbreviation for

Conservative
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for con

con-

pref.

Variant ofcom-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.