dash off

dash off idiom
  1. Write or sketch hastily, as in I'm just going to dash off a letter. [Early 1700s]
  2. Hurry away, depart hastily, as in He dashed off as though he was being chased. This usage employs the verb dash in the sense of “impetuously run” or “rush,” a usage dating from about 1300.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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