active
adj.adj. doing things that involve physical movement or being busy with many tasks. You use this to describe someone who exercises often or a system that is currently working.
adj. characterised by energetic action, physical movement, or participation; currently operational or in use.
She stays active by walking to work every morning.
The volcano is still active, so tourists are not allowed to hike near the crater for safety reasons.
Maintaining an active lifestyle is essential for long-term health, as regular physical engagement helps prevent many chronic conditions associated with a sedentary routine.
Etymology tree Proto-Indo-European *h₂eǵ- Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actifbor. Middle English actyf English active From Middle English actyf, from Old French actif, from Latin āctīv(us), from agere (“to do, to act”), ultimately from Proto-Indo-European *h₂éǵeti. By surface analysis, act + -ive.
Often used before a noun or after a linking verb like 'be' or 'stay'.
He is very activityHe is very activeLearners sometimes confuse the noun 'activity' with the adjective 'active' when describing a person's character.