21
bad(adjective, characteristic, quality, poor, negative)
18
poor(adjective, characteristic, quality, bad, rough)
14
unpleasant(adjective, characteristic, feeling, bad, grody)
12
sick(adjective, health, characteristic, condition)
11
wicked(adjective, bad, evil, sin, mischief)
11
dangerous(adjective, characteristic, damage, harm)
11
decaying(adjective, quality, condition, product)
11
ill(adjective, health, characteristic, condition)
11
naughty(adjective, characteristic, manner, behaviour)
11
unwell(adjective, health, characteristic, condition)
11
wrong(adjective, evil, sin, mischief, wrongness)
10
ailing(adjective, health, characteristic, condition)
10
badly behaved(expression, characteristic, manner, behaviour)
10
cruel(adjective, evil, sin, mischief, wrongness)
10
imperfect(adjective, quality, bad, badness)
10
terrible(adjective, characteristic, feeling, bad)
10
appalling(adjective, characteristic, feeling, bad)
10
awful(adjective, quality, bad, badness)
10
damaging(adjective, characteristic, damage, harm)
10
defective(adjective, quality, bad, badness)
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APASmart Define. (2015). not good thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/not_good/thesaurus/synonyms
ChicagoSmart Define. 2015. "not good thesaurus" https://smartdefine.org/not_good/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, not good thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/not_good/thesaurus/synonyms>.
MLASmart Define. "not good thesaurus" 4 November 2015. Web. 20 September 2026. <https://smartdefine.org/not_good/thesaurus/synonyms>