The story
- Proto-Indo-European*h₂eǵ-
- Proto-Indo-European*h₂éǵeti
- Proto-Italic*agō
- Latinagō
- Ancient Greekἐνεργητικός (energētikós)
- Latināctīvus
- Latināctīvitās
- Middle Frenchactivité
- English todayactivity
From Middle French activité, from Latin activitas. Equivalent to active + -ity.
Etymology from Wiktionary, CC BY-SA 4.0.