40 entries under noun topic. ×

1
defect(good, right, benefit, blemish)
1
diminishment(stop, deterioration)
1
dip
1
ebb
1
failure(stop, increase, rise, deterioration)
1
halt(stop, deterioration)
1
injury(stop, deterioration)
1
retreat(stop, deterioration)
1
setback
0
declivity
0
decomposition(rot, breakdown)
0
demotion(stop, deterioration)
0
depression
0
diminishing(stop, deterioration, preferment)
0
retrogression(stop, deterioration)
0
slump
0
stagnation(stop, deterioration)
0
stop
0
stoppage(stop, deterioration)
0
wane
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APASmart Define. (2015). improvement thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/improvement/thesaurus/antonyms
ChicagoSmart Define. 2015. "improvement thesaurus" https://smartdefine.org/improvement/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2015, improvement thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/improvement/thesaurus/antonyms>.
MLASmart Define. "improvement thesaurus" 22 December 2015. Web. 30 September 2026. <https://smartdefine.org/improvement/thesaurus/antonyms>