10
disobedient(adjective, characteristic, manner, behaviour)
10
evil(adjective, sin, mischief, wrongness)
10
godawful(adjective, quality, bad, rough, poor)
10
harmful(adjective, characteristic, damage, harm)
10
rude(adjective, characteristic, manner, behaviour)
10
unhealthy(adjective, characteristic, damage, harm)
9
austere(adjective, state, characteristic, mood)
9
criminal(adjective, evil, sin, mischief, wrongness)
9
incorrect(adjective, quality, bad, badness)
9
adverse(adjective, state, characteristic, mood)
9
cruddy(adjective, quality, bad, rough, poor)
9
decayed(adjective, quality, condition, product)
9
decomposing(adjective, quality, condition, product)
9
deficient(adjective, quality, bad, badness)
9
diddly(adjective, quality, bad, badness)
9
difficult(adjective, state, characteristic, mood)
9
disagreeable(adjective, state, characteristic, mood)
9
discouraged(adjective, state, characteristic, mood)
9
discouraging(adjective, state, characteristic, mood)
9
diseased(adjective, health, characteristic, condition)
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APASmart Define. (2015). not good thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/not_good/thesaurus/synonyms
ChicagoSmart Define. 2015. "not good thesaurus" https://smartdefine.org/not_good/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, not good thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/not_good/thesaurus/synonyms>.
MLASmart Define. "not good thesaurus" 4 November 2015. Web. 24 September 2026. <https://smartdefine.org/not_good/thesaurus/synonyms>