4
reduce
4
take(verb, get, decline, develop, catch)
4
turn off(verb, expression, phrasal verb, upset, bother)
4
turn the stomach(expression, idiom, pain, unsavoriness)
4
weary(verb, fail, strain, annoy, exhaust)
4
worsen(decline, fall, fail, weaken, degenerate)
3
churn up(verb, expression, phrasal verb)
3
collapse(verb, decline, fail, strain, annoy)
3
corrode(verb, decline, pain, weaken, lessen)
3
debilitate(verb, trouble, hurt, bother, disturb)
3
decline(verb, break, develop, fail, crack)
3
depress(verb, worry, fail, strain, annoy)
3
displease(verb, upset, trouble, hurt, bother)
3
droop(verb, get, hurt, fail, disease)
3
enervate(verb, worry, fail, strain, annoy)
3
fade(verb, break, decline, fail, annoy)
3
fall(verb, decline, develop, fail, weaken)
3
fall ill(verb, expression, idiom)
3
flag(verb, break, hurt, fail, disease)
3
glut(verb, annoy, depress, exhaust, drain)
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APASmart Define. (2015). sicken thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sicken/thesaurus/synonyms
ChicagoSmart Define. 2015. "sicken thesaurus" https://smartdefine.org/sicken/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sicken thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sicken/thesaurus/synonyms>.
MLASmart Define. "sicken thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sicken/thesaurus/synonyms>