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  • con
    con
    adverb
    against a proposition, opinion, etc..
  • con-
    con-
    variant of com- before a consonant (exceptb, h, l, p, r ) and, by assimilation, before n: convene; condone; connection.
  • con.
    con.
    abbreviation
    concerto.
  • Con.
    Con.
    abbreviation
    Conformist.
Synonyms

con

1 American  
[kon] / kɒn /

adverb

  1. against a proposition, opinion, etc..

    arguments pro and con.


noun

  1. the argument, position, arguer, or voter against something.

    The pros of the library project are obvious, but we have to consider the cons as well.

con 2 American  
[kon] / kɒn /

verb (used with object)

conned, conning
  1. to swindle; trick.

    That crook conned me out of all my savings.

  2. to persuade by deception, cajolery, etc..

    Don't worry, I can always con my dad into letting me use his car.


noun

  1. a confidence game or swindle.

    By the time my uncle realized she was playing a con on him, she had already left town with his rare coin collection.

  2. a lie, exaggeration, or glib self-serving talk.

    He had a dozen different cons for getting out of paying traffic tickets.

adjective

  1. relating to or involving abuse of confidence.

    a slick con man;

    a con trick.

con 3 American  
[kon] / kɒn /

noun

Slang.
  1. a convict.

    Her brother's a con up in Elmira.


con 4 American  
[kon] / kɒn /

noun

Informal.
  1. a convention, especially one for fans of a particular type of popular culture.

    sci-fi, gaming, and anime cons.


con 5 American  
[kon] / kɒn /

verb (used with object)

conned, conning
  1. to learn; study; peruse or examine carefully.

    She's been conning her grandfather's medical diaries for months.

  2. to commit to memory.

    I have conned the state capitals in alphabetical order, from Albany to Trenton.


con 6 American  
[kon] / kɒn /
Or conn

verb (used with object)

conned, conning
  1. to direct the steering of (a ship).

    conning the freighter into port.


noun

  1. the station of the person who cons.

    You will assume the con, ensign.

  2. the act of conning.

    Storms from the northeast made for a difficult con.

con 7 American  
[kon] / kɒn /

verb (used with object)

British Dialect.
conned, conning
  1. to strike, hit, or rap (something or someone).

    We think he was conned with a cricket bat.

  2. to hammer (a nail or peg).

    Who knew conning tacks into the new carpet would take so long?

  3. to beat or thrash (a person) with the hands or a weapon.

    He conned the poor guy in the pub for no apparent reason.


con- 8 American  
  1. variant of com- before a consonant (exceptb, h, l, p, r ) and, by assimilation, before n: convene; condone; connection.


con. 9 American  

abbreviation

  1. concerto.

  2. conclusion.

  3. connection.

  4. consolidated.

  5. consul.

  6. continued.

  7. against.


Con. 10 American  

abbreviation

  1. Conformist.

  2. Consul.


con 1 British  
/ kɒn /

noun

    1. short for confidence trick

    2. ( as modifier )

      con man

"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

verb

  1. (tr) to swindle or defraud

"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
con 2 British  
/ kɒn /

noun

  1. an argument or vote against a proposal, motion, etc

  2. a person who argues or votes against a proposal, motion, etc

"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

con 3 British  
/ kɒn /

verb

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

"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

noun

  1. the place where a person who cons a vessel is stationed

"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
Con. 4 British  

abbreviation

  1. 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

con 5 British  
/ kɒn /

noun

  1. slang short for convict

"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

con 6 British  
/ kɒn /

verb

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

"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

con 7 British  
/ kɒn /

preposition

  1. music with

"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

con- 8 British  

prefix

  1. a variant of com-

"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

Etymology

Origin of con1

First recorded in 1575–85; short for Latin contrā “in opposition, against”

Origin of con2

An Americanism first recorded in 1895–1900; by shortening of confidence

Origin of con3

First recorded in 1715–25; by shortening

Origin of con4

First recorded in 1940–45; by shortening

Origin of con5

First recorded before 1000; Middle English cunnen, Old English cunnan, variant of can 1 in sense “become acquainted with, learn to know”

Origin of con6

First recorded in 1350–1400; earlier cond, apocopated variant of Middle English condie, condue, from Middle French cond(u)ire, from Latin condūcere “to conduct”

Origin of con7

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

Origin of con-8

From Latin

Origin of con.9

From the Latin word contrā


Explanation

A con, or confidence game, is a swindle — when you take advantage of someone's trust. If you con someone out of their life savings, you might wind up a con — as in convict. The word con has many meanings, none of them good. An argument has pros and cons, and the cons are always the downside. An ex-con is someone who spent time in jail as a convict, and a con artist is someone who scams people out of their money.

Keep Reading on Vocabulary.com

Vocabulary lists containing con

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Tales of charming fraudsters, cheaters and con artists are historically fascinating to the American audience.

From Los Angeles Times ● Oct. 22, 2026

A chorus of testimony from people who were once closest to Musk builds a profile of a megalomaniacal con artist.

From Salon ● Oct. 16, 2026

She said the sector had many decent businesses which were "undermined by far too many cowboys, crooks and con artists".

From BBC ● Sep. 29, 2026

And it would be easy to conclude that he’s running a kind of big con.

From Slate ● Sep. 22, 2026

The con jumps and Natalie’s smile, like some kind of rare bird sighting, slips away.

From "Al Capone Does My Shirts" by Gennifer Choldenko

But you don’t want any con- tentious relationships in play before the green flag drops.

From Los Angeles Times ● Oct. 26, 2016

“This is no small task, but the con- sequences for food and ecosystem security could not be bigger.”

From Time ● Feb. 4, 2016

Where there’s one story, there are many, and they do not fit con- veniently together.

From Scientific American ● Jun. 21, 2013

She has been vilified in news reports around the world and called a “professional con- artist,” Thompson wrote in the filing.

From BusinessWeek ● Aug. 8, 2011

When I polled some accomplished writers about which style manuals they had con- sulted during their apprenticeships, the most common answer I got was “none.”

From "The Sense of Style" by Steven Pinker

“I don’t really care what happens to him personally. I’m not pro, I’m not con. I just think some people might want the shirt.”

From Washington Post ● Apr. 5, 2023

"It seems like a bit of a con. They're trying to pull money out of people, pushing people through court cases," she said.

From BBC ● Oct. 13, 2022

“This was all the long con. We’ve been wearing ’em just to get you to look stupid.

From The Guardian ● Jul. 14, 2020

We went about another 500 yards and the Navigator Lieutenant, Rob Chadwick, said: “this is the navigator. I have the con. All engines back full.”

From MSNBC ● Oct. 16, 2019

“It’s pro and con. So you should go first.”

From "P.S. Be Eleven" by Rita Williams-Garcia

“It’s Comic Con. They’re always fun,” said Reid, also known for her roles in “American Pie” and “The Big Lebowski.”

From Seattle Times ● May 13, 2016

“Word spread pretty quickly about Amazing Hawaii Con. That took everyone by storm.”

From Washington Times ● Jul. 25, 2015

“Oh, cool. Little Comic Con. Are you going to this?”

From "When Dimple Met Rishi" by Sandhya Menon

Shae said, “That is a sweet tale, Con. But what’s the moral of the story?”

From "Huntress" by Malinda Lo

“You will have to climb down after Con. Can you do it? I’ll stay beside you.”

From "Huntress" by Malinda Lo

Lexington, Ky., was conned out of $3.9 million a year later, but authorities seized all of it from a private bank account.

From The Wall Street Journal ● Jul. 21, 2026

A woman conned by her accountant decades ago is staring at a six-figure tax bill after the Supreme Court refused to hear her case.

From MarketWatch ● Jun. 25, 2026

A world champion Irish dancer has been left with a criminal conviction after being conned into thinking she had car insurance by a "ghost broker" who sold her a fake policy.

From BBC ● May 14, 2026

A romance fraudster who conned men into spending tens of thousands of pounds to fund her lavish lifestyle has been jailed.

From BBC ● Mar. 25, 2026

He had successfully conned Renault and Leon and The Vigils and the whole damn school.

From "The Chocolate War" by Robert Cormier

“She was a con artist. She was conning the government, and men,” Perry says.

From Los Angeles Times ● May 7, 2026

How do I set it up to help protect his assets from possibly someone who is conning him?

From MarketWatch ● Dec. 1, 2025

In January 2023 he was jailed at Isleworth Crown Court for a separate fraud after conning £16,700 from another woman.

From BBC ● Nov. 22, 2025

Yet it was this exact determination—to build power in an inherently flawed system—that turned him into the conning strategist he became.

From Slate ● Dec. 12, 2024

“I glad-handed from hell to breakfast, winning friends and conning people,” he wrote.

From "Black Like Me" by John Howard Griffin

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