The phrase "active agent" refers to a person, substance, or thing that is directly and energetically involved in causing a certain effect or making something happen.
Sentences with «active agent»
All five see themselves as active agents in determining their religions. (religion-online.org)
Schools should be places of questioning and critical thinking that encourage students to see themselves as active agents of change. (nycore.org)
Previously, 17 per cent of active agents did between 10 and 25 deals (enough to survive and stay in business). (remonline.com)