flunk out

flunk out idiom
  1. Expel or be expelled from a school because one's work does not meet the required standard. For example, He flunked out of Harvard after just one year. [Slang; early 1800s]
  2. Fail at anything, as in The camera ran out of film so we flunked out as photographers. [Slang; late 1800s]

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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