ACTIVENESS
activeness, activity
(noun) the trait of being active; moving or acting rapidly and energetically; “the level of activity declines with age”
action, activity, activeness
(noun) the state of being active; “his sphere of activity”; “he is out of action”
Source: WordNet® 3.1
Etymology
Noun
activeness (usually uncountable, plural activenesses)
The state or quality of being active.
Source: Wiktionary
Ac"tive*ness, n.
Definition: The quality of being active; nimbleness; quickness of motion;
activity.
Source: Webster’s Unabridged Dictionary 1913 Edition