96 entries under decline topic. ×

1
retrograde(weaken, degenerate, deteriorate, decay)
1
retrogress(weaken, degenerate, deteriorate, degrade)
1
skid(weaken, degenerate, deteriorate, degrade)
1
slide(weaken, degenerate, deteriorate, decay)
1
temper(verb, reduce, fail, halt)
1
thin out(verb, expression, reduce, fail)
1
tire(verb, reduce, fail, halt)
1
totter(verb, reduce, fail, halt)
1
tremble(verb, reduce, fail, halt)
1
wane(verb, fail, blow, weaken)
1
water down(verb, expression, dull, reduce)
1
worsen(verb, fail, damage, lower)
0
fall off(verb, expression, fail, fade)
0
get worse(expression, weaken, worsen)
0
grow weaker(verb, expression, fail, fade)
0
wear off(verb, expression, fail, fade)
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APASmart Define. (2015). undermine thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undermine/thesaurus/synonyms
ChicagoSmart Define. 2015. "undermine thesaurus" https://smartdefine.org/undermine/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, undermine thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undermine/thesaurus/synonyms>.
MLASmart Define. "undermine thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/undermine/thesaurus/synonyms>