This is the 4117th most frequent German word.
aktiven
"Aktiven" means "active" (plural form or as a noun referring to active people or participants).
Adjective describing 'Projekten', indicating the projects are ongoing or dynamic.
Ich nehme an vielen aktiven Projekten teil.
I participate in many active projects.
Adjective modifying 'Mitglieder', referring to engaged and participating individuals.
Die aktiven Mitglieder der Gruppe sind immer engagiert.
The active members of the group are always engaged.
Adjective characterizing 'Bemühungen', meaning deliberate and proactive actions.