95 entries under obnoxious topic. ×

5
treacherous(adjective, bad, hard, severe, evil)
5
ungracious(adjective, rough, difficult, rude, unpleasant)
5
vexatious(adjective, hard, severe, evil, rough)
5
waspish(adjective, mean, difficult, attitude, cross)
4
low(adjective, dull, blue, evil, rough)
4
fell(adjective, tough, severe, unpleasant, important)
4
glum(adjective, blue, low, sad, unpleasant)
4
grouchy(adjective, low, difficult, sad, attitude)
4
ignoble(adjective, hard, evil, rough, nasty)
4
low-down(adjective, unpleasant, horrible, disagreeable, dreadful)
4
major(adjective, tough, severe, unpleasant, heavy)
4
malevolent(adjective, upset, bad, unpleasant, corrupt)
4
messy(adjective, tough, unpleasant, horrible, painful)
4
peevish(adjective, upset, difficult, attitude, cross)
4
scandalous(adjective, unpleasant, awful, horrible, immoral)
4
scowling(adjective, unpleasant, awful, terrible, property)
4
servile(adjective, unpleasant, horrible, immoral, disagreeable)
4
troublous(adjective, tough, severe, unpleasant, awful)
4
truculent(adjective, rude, unpleasant, coarse, polite)
4
unlikable(adjective, difficult, rude, unpleasant, unfriendly)
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APASmart Define. (2016). ugly thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/ugly/thesaurus/synonyms
ChicagoSmart Define. 2016. "ugly thesaurus" https://smartdefine.org/ugly/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, ugly thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/ugly/thesaurus/synonyms>.
MLASmart Define. "ugly thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/ugly/thesaurus/synonyms>