Definition

Noun: 1. A person who works jointly with others toward a common goal or purpose: An individual who participates in an activity, endeavor, or sphere of common interest alongside others, contributing to a shared effort. 2. An associate or partner in a specific undertaking: Someone who is united with another in a cooperative relationship, often implying teamwork and mutual assistance.

Examples of Usage

• The project's success was due to the efforts of every cooperator on the team.
• She proved to be a reliable cooperator in the community clean-up initiative.
• In a scientific partnership, each researcher must be a willing cooperator.

Advanced Usage

• "Willing cooperator": Emphasizes the voluntary and active participation of an individual in a joint effort.
  • The investigation relied on finding a willing cooperator within the organization.
• Used in formal or legal contexts to describe a party who assists in an official process.
  • The witness was treated as a cooperator with the authorities.

Variants and Related Words

• Cooperate (verb): To work or act together for a common purpose.
  • The two companies agreed to cooperate on the new technology.
• Cooperation (noun): The process of working together.
  • International cooperation is essential to solve global issues.
• Cooperative (adjective): Involving mutual assistance in working toward a common goal. (Noun): An organization owned and run jointly by its members.
  • The team was highly cooperative. / She bought her groceries from the farmers' cooperative.

Synonyms

• Collaborator
• Partner
• Associate
• Ally
• Teammate
• Participant

Antonyms

• Opponent
• Adversary
• Rival
• Obstructionist

Related Phrases

• To act as a cooperator: To function in the role of someone who assists and works jointly.
  • He agreed to act as a cooperator in the joint venture.

Noun

1. an associate in an activity or endeavor or sphere of common interest
   • the musician and the librettist were collaborators
   • sexual partners