***My thought on this word: I am posting this for additional reflection and review. It is hard to distiguish the two words; acerbic and sacrastic. I will be pondering this during the day, in the hopes of comeing up with two seperate examples of sarcastic and acerbic.  Until then, well…have a great day.
American Heritage Dictionary – Cite This Source – Share This

sar·casm   Audio Help   (sär’kāz’əm)  Pronunciation Key  n.   A cutting, often ironic remark intended to wound. A form of wit that is marked by the use of sarcastic language and is intended to make its victim the butt of contempt or ridicule. The use of sarcasm. See Synonyms at wit1. [Late Latin sarcasmus, from Greek sarkasmos, from sarkazein, to bite the lips in rage, from sarx, sark-, flesh.]