79 entries under decline topic. ×

14
spoil(verb, dull, turn, weaken)
11
putrefy(verb, dull, spoil, weaken)
11
rot(verb, stop, dull, end)
9
decompose(verb, dull, spoil, weaken)
9
turn(verb, spoil, weaken, lessen)
6
disintegrate(verb, dull, spoil, weaken)
6
fail(verb, stop, end, pass)
5
deteriorate(verb, stop, end, pass)
4
break down(verb, expression, phrasal verb, stop, dull)
4
curdle(verb, dull, turn, spoil)
4
mildew(verb, weaken, lessen, degenerate)
4
molder(verb, stop, dull, end)
3
break up(verb, expression, phrasal verb, weaken)
3
crumble(verb, stop, dull, end)
3
mold(verb, weaken, lessen, degenerate)
3
mortify(verb, weaken, lessen, degenerate)
3
sink(verb, stop, end, pass)
3
suppurate(verb, weaken, lessen, degenerate)
2
be impaired(verb, weaken, lessen, degenerate)
2
become contaminated(verb, expression, weaken, lessen)
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APASmart Define. (2016). go bad thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/go_bad/thesaurus/synonyms
ChicagoSmart Define. 2016. "go bad thesaurus" https://smartdefine.org/go_bad/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, go bad thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/go_bad/thesaurus/synonyms>.
MLASmart Define. "go bad thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/go_bad/thesaurus/synonyms>