Synonym: battle, behavior, performance, reaction. Similar words: reaction, fraction, attraction, take action, interaction, practitioner, transaction, fiction. Meaning: ['ækʃn] 
n. 1. something done (usually as opposed to something said) 2. the state of being active 3. 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 4. an act by a government body or supranational organization 5. a military engagement 6. a process existing in or produced by nature (rather than by the intent of human beings) 7. the series of events that form a plot 8. the operating part that transmits power to a mechanism 9. the trait of being active and energetic and forceful 10. the most important or interesting work or activity in a specific area or field. v. 1. institute legal proceedings against; file a suit against 2. put in effect.
n. 1. something done (usually as opposed to something said) 2. the state of being active 3. 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 4. an act by a government body or supranational organization 5. a military engagement 6. a process existing in or produced by nature (rather than by the intent of human beings) 7. the series of events that form a plot 8. the operating part that transmits power to a mechanism 9. the trait of being active and energetic and forceful 10. the most important or interesting work or activity in a specific area or field. v. 1. institute legal proceedings against; file a suit against 2. put in effect. 
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(31) He vowed to take legal action.
(32) A good idea without action is worth nothing.
(33) The time is ripe for action.
(34) The local police took swift action against the squatters.
(35) Their action was judged illegal by the International Court.
(36) Your action has rendered our contract invalid.
(37) Goodness invests his every action.
(38) He condemned the government's action as immoral.
(39) We may have to take military action.
(40) The board disavowed the action of the executive.
(41) This action would render the agreement invalid.
(42) The chairman exhorted the party workers to action.
(43) I commended her for that action.
(44) We consider this action justifiable.
(45) Prompt action was required as the fire spread.
(46) My assistant will now demonstrate the machine in action.
(47) Take whatever action is needed.
(48) Gill's last school report shocked his parents into action.
(49) The union is considering stepping up its industrial action.
(50) Turning refugees away would be an inhumane action.
(51) I determined upon a course of action.
(52) His death was a direct result of your action.
(53) You must rouse yourself to action.
(54) Was his action in conformity with the law?
(55) They decided against taking legal action.
(56) I had been in action bombarding the Normandy coast.
(57) His action is always consistent with his words.
(58) Action is the real measure of intelligence. Napoleon Hill 
(59) Alcohol significantly inhibits the action of the drug.
(60) Is your machine still in action?
More similar words: reaction, fraction, attraction, take action, interaction, practitioner, transaction, fiction, auction, section, sanction, function, election, reduction, selection, objection, infection, protection, connection, production, functional, and function, inspection, prediction, collection, projection, distinction, conviction, reflection, destruction.