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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.

con

¹ American  

[kon] / kɒn /

adverb

1. against a proposition, opinion, etc..

   arguments pro and con.

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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.

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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.

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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.

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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.

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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.

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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.

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con- ⁸ American  

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

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con. ⁹ American  

abbreviation

1. concerto.

2. conclusion.

3. connection.

4. consolidated.

5. consul.

6. continued.

7. against.

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Con. ¹⁰ American  

abbreviation

1. Conformist.

2. Consul.

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con ¹ British  

/ kɒn /

noun

1. 1. short for confidence trick

   2. ( as modifier )

      con man

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verb

1. (tr) to swindle or defraud

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

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con ³ British  

/ kɒn /

verb

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

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noun

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

Con. ⁴ British  

abbreviation

1. Conservative

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con ⁵ British  

/ kɒn /

noun

1. slang short for convict

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con ⁶ British  

/ kɒn /

verb

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

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con ⁷ British  

/ kɒn /

preposition

1. music with

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con- ⁸ British  

prefix

1. a variant of com-

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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.

Example Sentences

See Examples For:

con con- con. Con. conned conning

“Lucky” on Apple TV features Anya Taylor-Joy as a con artist on the run.

From Los Angeles Times ● Jul. 15, 2026

Ducting air con is the least noticeable option due to the vents and can cool multiple rooms.

From BBC ● Jul. 9, 2026

That’s most likely to happen not because you’re stupid or greedy, but because you’re vulnerable—and because the con artist knows exactly how to fabricate trustworthiness.

From The Wall Street Journal ● Jun. 30, 2026

But with that pro came a con -- at such an altitude, the device without its own propulsion would eventually drift closer to Earth and burn up in the atmosphere.

From Barron's ● Jun. 30, 2026

Maybe Mecca is good memories, presents and stories and poetry and arroz con polio and family and friends .

From "Brown Girl Dreaming" by Jacqueline Woodson

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

Our history began with networking computers together and then con- necting up the networks for the sake of efficiency and resource sharing and remote access.

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

Throughout the long and con- fused day, wherever I went, I met black people with grief and rage in their eyes.

From "Kaffir Boy: An Autobiography" by Mark Mathabane

"It's not a con. It's an attempt to set up a new distinction in the world of academia - an attempt that failed," he is reported as saying.

From BBC ● May 6, 2026

“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

“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

“I don’t know, Con. But if you get dressed fast, we can all head down to the breakfast buffet and have some more of those waffles.”

From "The Sea in Winter" by Christine Day

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

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

The second, Joan, a middle-aged heiress in Florida, was conned by Ken into believing that he was Jewish and a canny businessman.

From The Wall Street Journal ● Mar. 30, 2026

He invested in and then reputedly conned the 1980s rich-kids “Billionaire Boys Club” private-school students’ investment group.

From Los Angeles Times ● Feb. 21, 2026

She’d just been conned by a senior citizen.

From "As Brave As You" by Jason Reynolds

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

From MarketWatch ● Dec. 1, 2025

Too many players conning the ref trying to get advantage, in particular players going down holding face or head when never touched.

From BBC ● Nov. 11, 2025

Three Southern California men are accused of conning over 100 victims — most of them elderly — into transferring funds over fraudulent security concerns or by way of falsified real estate sales.

From Los Angeles Times ● May 15, 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

The captain turned and headed for the conning deck.

From "Ship Breaker" by Paolo Bacigalupi

Related Words

• bamboozle
• bilk
• dupe
• hoodwink
• swindle
• wheedle