adjective
[more ~; most ~] :doing things that require physical movement and energy
[more ~; most ~]
involved in the activities of a group or organization
involving action or participation
marked by regular action or use
of a volcano :likely to explode violently or produce fire and hot liquid rock :capable of erupting
of a disease :becoming worse or continuing to have bad effects
having a chemical effect especially on the body
a US :involving service in the military as a main job
involving fighting in a war as a member of the military
grammar
a of a verb or voice :showing that the subject of a sentence is the one doing the action expressed by the verb
The active voice is a way of writing or speaking that uses active verbs.
b of a verb :expressing action rather than describing the state of something