VERBS be | become | keep (informal), remain Try to keep active in the cold weather.
ADV. extremely, highly, very a highly active volcano | increasingly | fairly, quite, reasonably | equally a businessman who is equally active in politics | mentally, physically It's important to remain mentally active after retirement. | sexually A minority of children are sexually active before they are in their teens. | economically, politically When did you first become politically active?
PREP. against drugs that are active against cancers | in She has been active in local politics for some years.