50 entries under weakening topic. ×

1
enfeeblement(noun, drop, fall, failure, deterioration)
1
fading away(noun, expression, adjective, drop, decrease)
1
losing momentum(expression, adjective, lessening, declining)
1
senility(noun, drop, fall, failure, deterioration)
1
shriveling up(expression, adjective, lessening, declining)
1
skids(noun, drop, fall, failure, deterioration)
1
slump(noun, drop, fall, failure, deterioration)
1
weak(adjective, worsening, fading, deteriorating)
0
declinatory(adjective, lessening, declining, decreasing)
0
defeated(adjective, worsening, deteriorating)
0
deficient(adjective, worsening, deteriorating)
0
faint(adjective, worsening, deteriorating)
0
feeble(adjective, worsening, deteriorating)
0
inadequate(adjective, worsening, deteriorating)
0
insufficient(adjective, worsening, deteriorating)
0
not well(expression, adjective, worsening, deteriorating)
0
palling(fading, wearying, flagging)
0
scant(adjective, worsening, deteriorating)
0
scanty(adjective, worsening, deteriorating)
0
scarce(adjective, worsening, deteriorating)
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APASmart Define. (2015). waning thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/waning/thesaurus/synonyms
ChicagoSmart Define. 2015. "waning thesaurus" https://smartdefine.org/waning/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, waning thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/waning/thesaurus/synonyms>.
MLASmart Define. "waning thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/waning/thesaurus/synonyms>