moving, working, or operating, not at rest
quick in physical movement; lively
marked by or requiring vigorous activity
active sports
full of activity; busy
an active life
characterized by practical action rather than by contemplation or speculation
an active interest in politics
marked by or requiring vigorous activity
full of activity; busy
characterized by practical action and involvement
an active interest in politics
having practical results; effective
of a substance: capable of acting or reacting; activated
having practical results; effective
an active ingredient
said of a volcano: liable to erupt; not extinct
in grammar, said of a verb form or voice: having as the subject the person or thing doing the action
said of a sentence: containing an active verb form
relating to full-time service, esp in the armed forces
said of a substance: capable of acting or reacting; activated
said of an electronic device, e.g. a transistor or valve: using electrical power for amplifying or controlling an electrical signal