- to make or become less active, vigorous, intense, etc.
- to make or become looser or less taut.
Origin of slacken
SynonymsSee more synonyms for slacken on Thesaurus.com
1, 2. relax, loosen, slack, abate.
2. tighten, tense.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for slacken
In the 1990s, his pace began to slacken, and eventually the hits evaporated.Are We in the Midst of a Kevin Costner Comeback?
January 28, 2014
Nor did she slacken her pace as she drew near the house, she only ran more softly.Heather and Snow
The storm continued all day, but began to slacken in intensity at sunset.A Singer from the Sea
Amelia Edith Huddleston Barr
Her death did not weaken my resolutions nor slacken my ardour.The Memoirs of Madame de Montespan, Complete
Madame La Marquise De Montespan
The yachtsman, however, should not slacken them as for scudding.Boys' Book of Model Boats
Raymond Francis Yates
Nor had the horses any desire to slacken their headlong rush.The Twins of Suffering Creek
- to make or become looser
- to make or become slower, less intense, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for slacken
Online Etymology Dictionary, © 2010 Douglas Harper