2
oppugnant(adjective, mean, nasty, unfriendly, hateful)
2
perilous
2
personal
2
poor(adjective, unpleasant, negative, awkward, adversity)
2
recalcitrant(unpleasant, negative, hostile, different, unfortunate)
2
refractory(cross, unpleasant, negative, hostile, different)
2
regretful
2
repulsive(adjective, awful, dirty, gloom, badly)
2
risky(injurious, damaging, destructive)
2
rival(hostile, contrary, opposite, opposing, disparate)
2
rotten
2
rugged(adjective, difficult)
2
scrappy(adjective, mean, nasty, unfriendly, hateful)
2
slighting(damaging, disparaging, hurtful, detrimental, derogatory)
2
surly(adjective, person, mean, bad, wrong)
2
terrible
2
tight(adjective, difficult)
2
tough(adjective, difficult)
2
tricky(adjective, difficult)
2
uncomely
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APASmart Define. (2016). adverse thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/adverse/thesaurus/synonyms
ChicagoSmart Define. 2016. "adverse thesaurus" https://smartdefine.org/adverse/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, adverse thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/adverse/thesaurus/synonyms>.
MLASmart Define. "adverse thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/adverse/thesaurus/synonyms>