play a role or part; "Gielgud played Hamlet"; "She wants to act Lady Macbeth, but she is too young for the role"; "She played the servant to her husband's master"
a manifestation of insincerity; "he put on quite an act for her benefit"
perform on a stage or theater; "She acts in this play"; "He acted in `Julius Caesar'"; "I played in `A Christmas Carol'"
behave unnaturally or affectedly; "She's just acting"
perform an action, or work out or perform (an action); "think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"
be engaged in an activity, often for no particular purpose other than pleasure
have an effect or outcome; often the one desired or expected; "The voting process doesn't work as well as people thought"; "How does your idea work in practice?
make a pretence of; "She assumed indifference, even though she was seething with anger"; "he feigned sleep"
create a representation or model of; "The pilots are trained in conditions simulating high-altitude flights"
reproduce someone's behavior or looks; "The mime imitated the passers-by"; "Children often copy their parents or older siblings"