good turn

good turn idiom
A favor, an act of good will, as in Pat did her a good turn by calling in a second surgeon. [First half of 1400s]

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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