5
delay(verb, stop, check, reduce, cause)
5
die down(verb, expression, phrasal verb, calm, drop)
5
drop off(verb, expression, phrasal verb, drop, cut)
5
ease up(verb, expression, phrasal verb, stop, calm)
5
flag(verb, check, release, fail, delay)
5
give(verb, yield, surrender, collapse, spend)
5
lull(verb, calm, order, quiet, ease)
5
repress(verb, hold, calm, control, order)
5
taper off(verb, expression, stop, dull, decline)
4
brake(verb, stop, check)
4
calm down(verb, expression, phrasal verb, calm, drop)
4
cool(verb, adjective, stop, calm, control)
4
damp(adjective, moderation)
4
deteriorate(verb, stop, drop, cut, decline)
4
die away(verb, expression, phrasal verb, decline, ease)
4
disjoin(verb, separate, remove, release, free)
4
drag(verb, hold, keep, fail, block)
4
dull(verb, stop, reduce, release, fall)
4
fade(verb, stop, drop, cut, decline)
4
fail(verb, stop, go, decline, open)
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APASmart Define. (2015). slacken thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slacken/thesaurus/synonyms
ChicagoSmart Define. 2015. "slacken thesaurus" https://smartdefine.org/slacken/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, slacken thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slacken/thesaurus/synonyms>.
MLASmart Define. "slacken thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/slacken/thesaurus/synonyms>