Synonyms|118Antonyms|1|Broader|0Narrower|0Related|22
1
insensitive(adjective, bad behavior)
1
malevolent(adjective, bad behavior)
1
malicious(adjective, bad behavior)
1
mean(adjective, bad behavior)
1
terrible
0
abominable
0
acute
0
almighty
0
ample
0
arduous
0
augean
0
awful
0
backbreaking
0
bad
0
base
0
big
0
blistering
0
cat-hearted(adjective, bad behavior)
0
challenging
0
considerable
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APASmart Define. (2016). hellacious thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/hellacious/thesaurus/synonyms
ChicagoSmart Define. 2016. "hellacious thesaurus" https://smartdefine.org/hellacious/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, hellacious thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/hellacious/thesaurus/synonyms>.
MLASmart Define. "hellacious thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/hellacious/thesaurus/synonyms>