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?"; "This method doesn't work"; "The breaks of my new car act quickly"; "The medicine works only if you take it with a lot of water"
be suitable for theatrical performance; "This scene acts well"