S: (n) 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"
S: (n) action (the series of events that form a plot) "his novels always have a lot of action"
S: (n) action (the trait of being active and energetic and forceful) "a man of action"
S: (n) action, action mechanism (the operating part that transmits power to a mechanism) "the piano had a very stiff action"
S: (n) legal action, action, action at law (a judicial proceeding brought by one party against another; one party prosecutes another for a wrong done or for protection of a right or for prevention of a wrong)
S: (n) action (an act by a government body 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"
S: (n) action (the most important or interesting work or activity in a specific area 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"
Verb
S: (v) 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"