Synonyms|963Antonyms|275|Broader|26Narrower|89Related|658
1
halt(noun, stop, deterioration)
1
infirmity(health, perfection)
1
injury(noun, stop, deterioration)
1
lessening
1
plunge
1
reduction
1
retreat(noun, stop, deterioration)
1
rot
1
ruin
1
setback
1
waste
1
wear
0
abandoned
0
abate
0
abbreviate
0
abject
0
abrasive
0
abridge
0
abridgement
0
aggravating
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ChicagoSmart Define. 2015. "improvement thesaurus" https://smartdefine.org/improvement/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, improvement thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/improvement/thesaurus/antonyms>.
MLASmart Define. "improvement thesaurus" 22 December 2015. Web. 25 September 2026. <https://smartdefine.org/improvement/thesaurus/antonyms>