Definition

Noun: A person who collaborates with another, especially in an illicit, mischievous, or secretive activity. The term implies a close, complicit association in a scheme or deed, often with a connotation of shared risk and camaraderie.

Usage

The term "partner in crime" is used to describe a close accomplice. It is most commonly used in a figurative and playful sense to refer to a friend who joins in on harmless mischief or shared adventures, though it can literally refer to an accomplice in illegal acts. It functions as a countable noun.

Examples

• She's my best friend and partner in crime; we do everything together.
• The two thieves were partners in crime for over a decade before being caught.
• "Who ate the last cookie?" "I did, but my partner in crime here helped me finish the milk!"

Advanced Usage

• The phrase is often used humorously or affectionately to emphasize a deep, loyal, and conspiratorial bond between friends or allies, even in completely legal contexts.
• It can be used in business or project settings to describe a close collaborator on a difficult or risky venture.
  • On this new startup, she's my partner in crime; we're challenging the industry giants.

Variants and Related Words

• Accomplice (n.): A person who helps another commit a crime. (More formal and specifically legal than "partner in crime").
• Confederate (n.): A person or group united with another for a common purpose, often in a secret plot.
• Collaborator (n.): A person who works jointly on an activity or project. (Neutral, without the inherent connotation of mischief or illegality).

Synonyms

• Accomplice
• Confederate
• Ally (in a scheme)
• Collaborator (in a context of secrecy or mischief)
• Sidekick (implies a secondary role)

Antonyms

• Adversary
• Opponent
• Rival
• Law-abiding citizen

Idioms and Fixed Phrases

• Partners in crime: The standard plural form.
  • They weren't just colleagues; they were partners in crime in every office prank.
• The phrase itself is an idiom. Its meaning extends beyond literal crime to encompass any close partnership in playful or secretive endeavors.

Noun

1. someone who assists in a plot