active
US /ˈæktɪv/
・UK /ˈæktɪv/
A1
adjective
- Moving around a lot or doing many things
- Engaging or ready to engage in physically energetic pursuits.
- Involving or engaged in activity; participating.
- (of a verb or construction) expressing that the subject performs the action denoted by the verb.
Examples
drugs that are active against cancers
It's important to remain mentally active after retirement.