A person or thing that is acting or capable of acting.
Any component that is not passive. See Passivity (engineering).
Brisk; lively.
Applied to a form of the verb; — opposed to passive. See active voice.
Applied to verbs which assert that the subject acts upon or affects something else; transitive.
(of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner.
Requiring or implying action or exertion
Not passive.
Given to action rather than contemplation; practical; operative
Eligible to be processed by a compiler or interpreter.
Having the power or quality of acting; causing change; communicating action or motion; acting;—opposed to passive, that receives.
Emitting hot materials, such as lava, smoke, or steam, or producing tremors.
Implying or producing rapid action.
Given to action; constantly engaged in action; energetic; diligent; busy
Quick in physical movement; of an agile and vigorous body; nimble.
Applied to all verbs that express action as distinct from mere existence or state.
In action; actually proceeding; working; in force
A person who is indifferent or apathetic.
Indicating or reflecting a lack of concern or care.
Ambivalent; unconcerned; uninterested, apathetic.
Having no preference.
Mediocre (usually used negatively in modern usage).
Not making a difference; without significance or importance.
Being in the state of neutral equilibrium.