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.