96 entries under noun topic. ×

24
abyss(activity, element, torment, misery)
18
Hell(place, ruin, difficulty, heaven)
13
inferno(ruin, misery, punishment, grave)
11
Hades(ruin, misery, punishment, agony)
8
mob(activity, informal, element, netherworld)
8
gangland(adjective, activity, element, criminal)
8
syndicate(activity, element, netherworld, gangland)
7
netherworld(punishment, hell, perdition, purgatory)
6
Mafia(activity, element, gang, netherworld)
5
crime(swindle, con, scam, concerned with organized crime)
5
infernal region(expression, idiom)
5
organized crime(activity, element, netherworld, gangland)
5
perdition(misery, punishment, grave, agony)
4
Hel
4
Scheol
4
criminals(activity, element)
4
nether world(expression, idiom, misery, punishment)
4
purgatory(ruin, misery, punishment, grave)
4
racket(activity, element, swindle, con)
3
Pandemonium(misery, grave, nightmare, hell)
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APASmart Define. (2015). underworld thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/underworld/thesaurus/synonyms
ChicagoSmart Define. 2015. "underworld thesaurus" https://smartdefine.org/underworld/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, underworld thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/underworld/thesaurus/synonyms>.
MLASmart Define. "underworld thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/underworld/thesaurus/synonyms>