54 entries under decline topic. ×

1
languish(weaken, degenerate, deteriorate, decay)
1
lapse(noun, reduce, weaken, lessen)
1
lessen(verb, reduce, destroy, fail)
1
lose it(expression, weaken, degenerate, degrade)
1
lose quality(expression, weaken, degenerate, degrade)
1
regress(reduce, weaken, lapse, degenerate)
1
retrograde(verb, fail, lower, weaken)
1
retrogress(reduce, weaken, degenerate, deteriorate)
1
skid(weaken, degenerate, deteriorate, degrade)
1
slide(weaken, degenerate, deteriorate, decay)
1
wear away(expression, weaken, degenerate, deteriorate)
1
worsen(verb, reduce, destroy, fail)
0
get worse(expression, weaken, worsen)
0
wane(weaken, worsen)
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APASmart Define. (2016). deprave thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/deprave/thesaurus/synonyms
ChicagoSmart Define. 2016. "deprave thesaurus" https://smartdefine.org/deprave/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, deprave thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/deprave/thesaurus/synonyms>.
MLASmart Define. "deprave thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/deprave/thesaurus/synonyms>