72 entries under dreadful topic. ×

2
formidable(adjective, bad, hard, evil, rough)
2
grave(adjective, unpleasant, horrible, disagreeable)
2
low(adjective, unpleasant, base, corrupt, horrible)
2
serious(adjective, bad, nasty, delicate, unpleasant)
2
shocking(adjective, unpleasant, horrible, disagreeable)
2
spiteful(adjective, rough, nasty, dark, unpleasant)
2
sullen(adjective, rough, nasty, dark, unpleasant)
2
terrible(adjective, bad, severe, nasty, unpleasant)
2
wretched(adjective, unpleasant, horrible, disagreeable)
1
cantankerous(adjective, hard, evil, rough, nasty)
1
disagreeable(adjective, hard, evil, rough, nasty)
1
ignoble(adjective, hard, evil, rough, nasty)
1
offensive(adjective, severe, low, unpleasant, awful)
1
pesky(adjective, hard, severe, evil, rough)
1
rough(adjective, hard, nasty, dark, rude)
1
scandalous(adjective, low, unpleasant, corrupt, horrible)
1
unpleasant(adjective, hard, severe, evil, rough)
1
vexatious(adjective, hard, severe, evil, rough)
0
bellicose(adjective, rough, nasty, dark, unpleasant)
0
crabbed(adjective, rough, nasty, dark, unpleasant)
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APASmart Define. (2016). treacherous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/treacherous/thesaurus/synonyms
ChicagoSmart Define. 2016. "treacherous thesaurus" https://smartdefine.org/treacherous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, treacherous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/treacherous/thesaurus/synonyms>.
MLASmart Define. "treacherous thesaurus" 4 March 2016. Web. 29 September 2026. <https://smartdefine.org/treacherous/thesaurus/synonyms>