64 entries under foul topic. ×

14
sickening(adjective, bad, nasty, offensive, unpleasant)
14
ugly(adjective, bad, severe, plain, offensive)
12
alarming(adjective, bad, unpleasant, terrible, wonderful)
10
noxious(adjective, mean, bad, nasty, offensive)
9
calamitous(adjective, sad, unhappy, unpleasant, terrible)
8
creepy(adjective, nasty, terrible, vile)
8
hellish(adjective, bad, offensive, terrible)
8
noisome(adjective, bad, nasty, offensive)
8
unholy(adjective, bad, severe, offensive, unpleasant)
7
serious(adjective, bad, severe, offensive, intense)
7
ungodly(adjective, bad, severe, offensive, unpleasant)
6
filthy(adjective, bad, nasty, offensive, unpleasant)
6
obscene(adjective, bad, offensive, terrible)
6
stinking(adjective, bad, rough, poor, nasty)
5
dirty(adjective, bad, nasty, offensive, unpleasant)
5
mephitic(adjective, bad, offensive, disgusting)
5
objectionable(adjective, bad, nasty, offensive, unpleasant)
5
rough(adjective, bad, tough, poor, nasty)
5
yucky(adjective, bad, nasty, offensive)
4
tough(adjective, bad, severe, offensive, unpleasant)
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APASmart Define. (2016). awful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/awful/thesaurus/synonyms
ChicagoSmart Define. 2016. "awful thesaurus" https://smartdefine.org/awful/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, awful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/awful/thesaurus/synonyms>.
MLASmart Define. "awful thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/awful/thesaurus/synonyms>