over and done with

over and done with idiom
Completed, finished, as in That argument's over and done with, so drop the subject. This usage is somewhat redundant but more emphatic than over with. [First half of the 1900s]

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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