Definition of ACT

  1. (noun)a legal document codifying the result of deliberations of a committee or society or legislative body
  2. (noun)something that people do or cause to happen
  3. (noun)a subdivision of a play or opera or ballet
  4. (noun)a short performance that is part of a longer program
  5. (noun)a manifestation of insincerity
  6. (verb)perform an action, or work out or perform (an action)
  7. (verb)behave in a certain manner; show a certain behavior; conduct or comport oneself
  8. (verb)play a role or part
  9. (verb)discharge one's duties
  10. (verb)pretend to have certain qualities or state of mind
  11. (verb)be suitable for theatrical performance
  12. (verb)have an effect or outcome; often the one desired or expected
  13. (verb)be engaged in an activity, often for no particular purpose other than pleasure
  14. (verb)behave unnaturally or affectedly
  15. (verb)perform on a stage or theater