99 entries under foul topic. ×

13
icky(adjective, bad, nasty, offensive, unpleasant)
13
musty(adjective, strong, offensive, sweet, rank)
13
nauseating(adjective, bad, nasty, offensive, unpleasant)
12
decomposed(adjective, quiet, bad, slack)
12
mephitic(adjective, strong, offensive, sweet)
12
noisome(adjective, nasty, offensive, unpleasant, awful)
12
rank(adjective, offensive, unpleasant, disgusting)
11
repugnant(adjective, good, nasty, offensive, unpleasant)
10
nauseous(adjective, strong, offensive, sweet)
10
off(adjective, bad, rank, inferior)
9
gross(adjective, bad, wrong, evil, nasty)
9
moldy(adjective, strong, offensive, sweet, rank)
9
polluted(adjective, bad, offensive, unpleasant, rank)
9
unclean(adjective, offensive, unpleasant, dirty)
8
smelly(adjective, strong, offensive, sweet, rank)
8
strong(adjective, offensive, sweet, rank)
8
yucky(adjective, bad, nasty, offensive, unpleasant)
7
fusty(adjective, bad, rank, disagreeable)
7
malodorous(adjective, strong, offensive, unpleasant, sweet)
7
unsavory(adjective, mean, strong, offensive, unpleasant)
10 years ago|36k views|share |citing 
APASmart Define. (2016). rotten thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/rotten/thesaurus/synonyms
ChicagoSmart Define. 2016. "rotten thesaurus" https://smartdefine.org/rotten/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, rotten thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/rotten/thesaurus/synonyms>.
MLASmart Define. "rotten thesaurus" 3 April 2016. Web. 28 September 2026. <https://smartdefine.org/rotten/thesaurus/synonyms>