74 entries under foul topic. ×

4
antagonistic(adjective, person, mean, bad, wrong)
4
objectionable(adjective, bad, offensive, rude, unpleasant)
4
offensive(adjective, bad, severe, evil, awful)
4
polluted(adjective, bad, offensive, revolting)
4
severe(adjective, bad, offensive, awful, terrible)
3
serious(adjective, bad, offensive, revolting)
2
awful(adjective, bad, severe, offensive, terrible)
2
lousy(adjective, bad, offensive, useless)
2
mephitic(adjective, bad, evil, offensive, corrupt)
2
murderous(adjective, bad, offensive, violent)
2
surly(adjective, person, mean, bad, wrong)
2
unfriendly(adjective, person, mean, bad, wrong)
2
unkind(adjective, person, mean, bad, wrong)
1
insalutary(adjective, offensive, disgusting, poisonous)
1
loathsome(adjective, bad, offensive, corrupt)
1
obnoxious(adjective, bad, evil, nasty, offensive)
1
obscene(adjective, bad, offensive, corrupt)
1
outrageous(adjective, bad, severe, offensive, awful)
1
poison(adjective, bad, offensive, corrupt)
1
repugnant(adjective, bad, offensive, corrupt)
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APASmart Define. (2016). harmful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms
ChicagoSmart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, harmful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>.
MLASmart Define. "harmful thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms>