actor

B2 · Upper Intermediate Countable noun Academic

n. a person, group, or country that is involved in a situation or event.

n. an entity or agent that takes part in an action or process. Often used in political or social contexts to describe influential parties.

“Local businesses are important actors in the city's economy.”

“International observers identified several non-state actors who were instrumental in facilitating the peace negotiations.”

C1 · Advanced Countable noun Science Technical

n. the person or thing that performs the action of a verb.

n. the semantic role of the entity that performs the action described by the verb. In active sentences, this usually corresponds to the grammatical subject.

“In the sentence 'The cat chased the mouse', the cat is the actor.”

“The linguist noted that while the grammatical subject changed in the passive construction, the semantic actor remained the same.”

C2 · Proficiency Countable noun Law Formal · Archaic

n. a person who represents someone else in a court of law.

n. a person who acts on behalf of another, such as a guardian or a plaintiff in a legal suit.

“The court appointed an actor to manage the child's inheritance.”

“The document named him as the primary actor in the suit against the estate.”