What does the word acting mean?

Usage examples for acting

  1. He said, " No acting will be wanted; for here is Trilby." – George Du Maurier, the Satirist of the Victorians by T. Martin Wood
  2. But in doing that he is acting in a perfectly natural manner. – The Soul of Man by Oscar Wilde
  3. Allow me to present my friends, who are at present acting as my officers. – The Boy Allies Under the Sea by Robert L. Drake