A more thorough explanation:

Definition:

• Confidence: Abbreviation for confidence, often used in the context of a confidence game where a person intentionally misrepresents facts to gain the victim's trust so that the victim will transfer money or property to the person.
• Convict: Abbreviation for convict, often used to refer to someone who has been previously incarcerated.
• Contra: Abbreviation for contra, often used in the phrase "pros and cons" to refer to the arguments for and against something.
• Constitutional: Abbreviation for Constitutional, often used in the context of Constitutional law.

Examples:

• "He fell for the con and lost all his savings."
• "The ex-con was having trouble finding a job."
• "We need to weigh the pros and cons of this decision."
• "The case was decided based on Con. law."

The examples illustrate the different ways in which the abbreviation "con" can be used. The first example shows how it can be used in the context of a confidence game, where someone is tricked into giving away their money or property. The second example shows how it can be used to refer to someone who has been convicted of a crime. The third example shows how it can be used in the phrase "pros and cons" to refer to the arguments for and against something. The fourth example shows how it can be used in the context of Constitutional law.