Synonym: behave, do, law, perform, pretend. Similar words: fact, pact, exact, actor, react, tract, enact, act for. Meaning: [ækt] 
n. 1. a legal document codifying the result of deliberations of a committee or society or legislative body 2. something that people do or cause to happen 3. a subdivision of a play or opera or ballet 4. a short theatrical performance that is part of a longer program 5. a manifestation of insincerity. v. 1. perform an action, or work out or perform (an action) 2. behave in a certain manner; show a certain behavior; conduct or comport oneself 3. play a role or part 4. discharge one's duties 5. pretend to have certain qualities or state of mind 6. be suitable for theatrical performance 7. have an effect or outcome; often the one desired or expected 8. be engaged in an activity, often for no particular purpose other than pleasure 9. behave unnaturally or affectedly 10. perform on a stage or theater.
n. 1. a legal document codifying the result of deliberations of a committee or society or legislative body 2. something that people do or cause to happen 3. a subdivision of a play or opera or ballet 4. a short theatrical performance that is part of a longer program 5. a manifestation of insincerity. v. 1. perform an action, or work out or perform (an action) 2. behave in a certain manner; show a certain behavior; conduct or comport oneself 3. play a role or part 4. discharge one's duties 5. pretend to have certain qualities or state of mind 6. be suitable for theatrical performance 7. have an effect or outcome; often the one desired or expected 8. be engaged in an activity, often for no particular purpose other than pleasure 9. behave unnaturally or affectedly 10. perform on a stage or theater. 
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61) You act as if you're ashamed to be seen with me.
62) The Premier deputed the Foreign Minister to act as his deputy.
63) Directors may be tempted to act in their own self-interest.
64) Trying to continue with a demanding career and manage a child or two is an impossible juggling act.
65) The Broadcasting Act allows ministers to proscribe any channel that offends against good taste and decency.
66) The most difficult thing is the decision to act. The rest is merely tenacity.
67) He described the detention without trial of political opponents as a cowardly act.
68) His foolish act has brought a storm about his ears.
69) He explained the yellow fever epidemic as a providential act to discourage urban growth.
70) Change your life today. Don't gamble on the future, act now, without delay.
71) It was a noble act when he saved his friend from drowning.
72) By gravitation the sun and planets act and react upon one another.
73) He was happy to act as a consultant to the company.
74) Love is an act of endleforgiveness, a tender look which becomes Being deeply loved by someone gives you strength,[sentencedict.com] loving someone deeply gives you courage.
75) It was an act of violence that she found alien and shocking.
76) This year's Budget looks set to be a precarious high-wire act for the Chancellor.
77) The story should act as a warning to other prospective buyers.
78) Please inform us of your decision and we will act accordingly.
79) I have authorized him to act for me while I am away.
80) The omission of her name was not a deliberate act.
81) It seems that the attack was a gratuitous/random/mindless act of violence.
82) Only if one believes in something can one act purposefully.
83) The company was prosecuted for breaching the Health and Safety Act.
84) The terrorist action has been condemned as an act of barbarism and cowardice.
85) Running away was an act of defiance against his parents.
86) The Sex Discrimination Act has not eliminated discrimination in employment.
87) Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.
88) The Act states that anyone committing the offence is liable to imprisonment.
89) The act allows police to detain a suspect for up to 48 hours.
90) We are what we repeatedly do. Excellence, then, is not an act[sentencedict.com], but a habit. Aristotle 