soft pedal

soft pedal idiom
Something that de-emphasizes, restrains, or plays down, as in The mayor put a soft pedal on this potentially explosive situation. This expression alludes to the una corda or soft pedal of the piano, which reduces the volume of the sound. It gave rise to the verb soft-pedal, meaning both “reduce the volume of” or “make less emphatic, downplay.” [Early 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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