1. (noun)action something done (usually as opposed to something said) "there were stories of murders and other unnatural actions"
2. (noun)action, activity, activeness the state of beingactive "his sphere of activity"; "he is out of action"
3. (noun)military action, action a militaryengagement "he saw action in Korea"
4. (noun)natural process, natural action, action, activity a process existing in or produced by nature (rather than by the intent of human beings) "the action of natural forces"; "volcanic activity"
5. (noun)action the series of events that form a plot "his novels always have a lot of action"
6. (noun)action the trait of beingactive and energetic and forceful "a man of action"
7. (noun)action, action mechanism the operating part that transmits power to a mechanism "the piano had a very stiff action"
9. (noun)action an act by a governmentbody or supranational organization "recent federal action undermined the segregationist position"; "the United Nations must have the power to propose and organize action without being hobbled by irrelevant issues"; "the Union action of emancipating Southern slaves"
10. (noun)action the most important or interesting work or activity in a specificarea or field "the action is no longer in technology stocks but in municipal bonds"; "gawkers always try to get as close to the action as possible"
11. (verb)action, sue, litigate, process institute legal proceedings against; file a suit against "He was warned that the district attorney would process him"; "She actioned the company for discrimination"
12. (verb)carry through, accomplish, execute, carry out, action, fulfill, fulfil put in effect "carry out a task"; "execute the decision of the people"; "He actioned the operation"