This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The state of being active.

n. Energetic action or movement; liveliness.

n. A specified pursuit in which a person partakes.

n. An educational process or procedure intended to stimulate learning through actual experience.

n. The intensity of a radioactive source.

n. The ability to take part in a chemical reaction.

n. A physiological process: respiratory activity.

n. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

n. something done as an action or a movement

n. something done for pleasure or entertainment, especially one involving movement or an excursion.

n. Use (of internet, playstation, bank account etc.)

n. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force.

n. The state of action; doing.

n. Activeness; the quality of acting promptly and energetically.

n. An exercise of energy or force; an active movement or operation; a mode or course of action.

n. In physical, a term introduced by Sir William Thomson as an equivalent of “rate of doing work,” or the rate per unit of time at which energy is given out by a working system.

n. A physical or gymnastic exercise; an agile performance.

n. In. psychology, a self-determination of mental process, experienced or inferred, especially characteristic of the conative consciousness.

n. a process existing in or produced by nature (rather than by the intent of human beings)

n. an organic process that takes place in the body

n. the state of being active

n. the trait of being active; moving or acting rapidly and energetically

n. (chemistry) the capacity of a substance to take part in a chemical reaction

n. any specific behavior

"Further, it is not the name or character of an activity which determines whether it is play for the participant, but _his attitude toward the activity_."

passivity    rest   

capacity    capability   

alertness    ambition   

quickness    briskness    liveliness    nimbleness    agility    energy   

Nativity    aggressivity    captivity    conductivity    connectivity    creativity    exclusivity    expressivity    festivity    hyperactivity   

Sports    Health & Medicine    Politics & Government    Business & Economy    Auto   

action    operation    development    function    effort    event    industry    certainty    quality    manners