1. The state or process of acting or doing.
2. Something done or accomplished; a deed.
3. Organized activity to accomplish an objective: a problem requiring drastic action.
4. The causation of change by the exertion of power or a natural process.
5. A movement or a series of movements.
6. Manner of movement.
7. Habitual or vigorous activity; energy: a woman of action.
8. Behavior or conduct. Often used in the plural.