https://www.merriam-webster.com/thesaurus/activeness
ACTIVENESS Synonyms: 52 Similar and Opposite Words | Merriam-Webster Thesaurus
Synonyms for ACTIVENESS: liveliness, agility, welfare, well-being, spryness, strength, vitality, vigor; Antonyms of ACTIVENESS: illness, sickness, unsoundness,...
opposite wordsmerriam webstersynonymssimilarthesaurus
https://research.birmingham.ac.uk/en/publications/using-adaptive-feedback-for-promoting-awareness-about-physical-ac/
Using adaptive feedback for promoting awareness about physical activeness in adults - University of...