1. currently functioning in some way or performing some action, either continuously or intermittently. 2. exerting an effect or influence on another process or thing. 3. in grammar, denoting the active voice of a verb – as opposed to the passive one. 4. vigorous, lively, or energetic in some way [formulated in 1934 by U.S. psychologist Elizabeth Duffy (1904
AROUSAL STATE: “A person can be said to be in an arousal state when he or she is performing some action in the moment. “