Noun

Singular activity

Plural activities

activity (plural activities)

1. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

   Pit row was abuzz with activity.

2. something done as an action or a movement

   The activity for the morning was a walk to the store.

3. something done for pleasure or entertainment, especially one involving movement or an excursion.

   Quilting can be a fun activity.

4. Use (of internet, playstation, bank account etc.)

Antonyms

• rest
• passivity

Activity may mean:

• Action (philosophy), in general
• the Aristotelian concept of energeia, Latinized as actus
• physical activity
• mental activity
• Activity (chemistry)
• Activity (UML)
• Activity, an alternative name for the game charades
• Activity, a task.
• Activity, the ability of a piece to influence the game in chess
• Activity, the rate of a catalytic reaction, such as enzyme activity, in physical chemistry and enzymology
• activity (chemistry), the effective concentration of a solute for the purposes of mass action
• activity (project management)
• activity (radioactivity), the number of radioactive decays per second
• activity (software engineering)
• activity (soil mechanics)
• activity diagram, a diagram representing activities in UML
• Activity, a board game by Piatnik & Söhne
• HMS Activity (D94), an aircraft carrier of the Royal Navy
• in military parlance, a military agency or unit (e.g. Intelligence Support Activity)