Representing Synonyms and Antonyms

Acting as an agent
  1. serving
  2. acting for
  3. speaking for
  4. substituting for
  5. being deputy for
  6. acting by authority of
  7. attorney for
  8. factoring for
  9. stewarding for
  10. selling for
  11. buying for
  12. acting as broker for
Be the defense counsel for someone in a trial
  1. prosecuting
Be characteristic of
To establish a mapping (of mathematical elements or sets)
  1. mapping