173 entries under immoral topic. ×
| intolerable(adjective, evil, terrible, vicious, vile) | |
| unwholesome(adjective, mean, bad, wrong, blue) | |
| criminal(adjective, evil, cruel, wicked, unreasonable) | |
| dishonorable(adjective, mean, bad, spoil, offensive) | |
| egregious(adjective, bad, wrong, evil, offensive) | |
| fraudulent(adjective, corrupt, dishonest, rotten) | |
| hellish(adjective, bad, evil, taste, offensive) | |
| perfidious(adjective, mean, bad, base, dishonest) | |
| poison(verb, adjective, bad, hurt, harm) | |
| shameless(adjective, bad, wrong, blue, evil) | |
| sullied(adjective, nasty, offensive, unpleasant, dirty) | |
| treacherous(adjective, mean, bad, base, dishonest) | |
| unchaste(adjective, blue, offensive, dirty, coarse) | |
| dishonest(adjective, bad, dirty, wicked) | |
| knavish(adjective, bad, spoil, dishonest) | |
| reprobate(adjective, bad, wrong, evil, violent) | |
| underhanded(adjective, mean, base, corrupt, dishonest) | |
| venal(adjective, mean, base, disgusting, dishonest) | |
| adulterated(adjective, dirty, coarse, vile) | |
| baneful(adjective, evil, offensive, corrupt, disgusting) |
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| APA | Smart Define. (2016). foul thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/foul/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "foul thesaurus" https://smartdefine.org/foul/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, foul thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/foul/thesaurus/synonyms>. |
| MLA | Smart Define. "foul thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/foul/thesaurus/synonyms> |