(sociology) Is an act which takes into account the actions and reactions of individuals or "agents". Associated with Max Weber.

(political science, sociology) Any theory that centres its gaze, analysis, and interpretation around human action. E.g. rational choice theory, phenomenology, etc.

Alternative form of man of action

A group of people joined temporarily to accomplish some task or take part in some organised collective action. / (US military) A component of a naval task force.

The designation for a member of an organization (primarily military) who has died while on duty.

A part of a book or play in which more things start to happen. The rising action leads to the climax.

(management) A task; especially, regarding an agenda item discussed in a meeting that requires further activity or investigation in order to reach a conclusion, select an alternative, or implement a change.

A film, novel, television series or video game characterized by action, intrigue, and sometimes violence.

An actor or actress who plays the leading role or a major role in an action movie.

(law, chiefly US, Canada) A lawsuit brought by a single plaintiff or small group of plaintiffs as a representative of a large group of others having a common interest, with everyone in the large group eligible to receive damages if the plaintiff is successful.