to a fare-thee-well

to a fare-thee-well idiom
To the most extreme degree, especially a condition of perfection. For example, We've cleaned the house to a fare-thee-well, or He played the part of martyr to a fare-thee-well. This term first appeared as to a fare-you-well in the late 1800s, and the more archaic-sounding present form replaced it about 1940.

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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