taper off
Idioms-
Become thinner or narrower at one end, as in The road began to taper off until it was just a narrow path . [c. 1600]
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Diminish or lessen gradually, end by degrees, as in The storm finally tapered off . [Mid-1800s]
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.