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  1. Dictionary
    act
    /akt/

    verb

    • 1. take action; do something: "they urged Washington to act" Similar take actiontake stepstake measurestake the initiativeOpposite do nothing
    • 2. behave in the way specified: "they challenged a man who was seen acting suspiciously" Similar behavefunctionreactperform

    noun

    More definitions, origin and scrabble points

  2. to do something for a particular purpose or to solve a problem: [ + to infinitive ] Engineers acted quickly to repair the damaged pipes. act for Who is acting for the defendant? act on behalf of The agent was acting on behalf of (= representing) her client, a Broadway actress. She acted without thinking. Thesaurus: synonyms, antonyms, and examples.

  3. 1. a. : the doing of a thing : deed. an act of courage. b. law : something done voluntarily. 2. : the process of doing something : action. caught in the act. 3. : the formal product of a legislative body : statute. an act of Congress. also : a decision or determination of a sovereign, a legislative council, or a court of justice. 4.

  4. Act definition: anything done, being done, or to be done; deed; performance. See examples of ACT used in a sentence.

  5. 25 meanings: 1. something done or performed; a deed 2. the performance of some physical or mental process; action 3. the.... Click for more definitions.

  6. verb. behave in a certain manner; show a certain behavior; conduct or comport oneself. “You should act like an adult”. “The dog acts ferocious, but he is really afraid of people”. synonyms: behave, do. act as, play. pretend to have certain qualities or state of mind. dissemble, pretend.

  7. Definition of act verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  8. Contents. ACT definition: 1. to behave in a particular way: 2. to do something, especially in order to solve a problem: 3…. Learn more.