underworld
[noun]
Synonyms:
- criminals, gangland (informal), gangsters, organized crime
- nether world, Hades, nether regions

[TahlilGaran] English Synonym Dictionary ▲

un‧der‧world /ˈʌndəwɜːld $ ˈʌndərwɜːrld/ noun [singular]
[Word Family: noun: world, underworld, worldliness; adjective: world, worldly ≠ unworldly, worldwide; adverb: worldwide]

1. the criminals in a particular place and the criminal activities they are involved in:
New York’s criminal underworld

2. the Underworld the place where the spirits of the dead are believed to live, for example in ancient Greek stories

[TahlilGaran] Dictionary of Contemporary English ▲

underworld
noun
ADJ. dark, sinister the dark underworld of smuggling
criminal
UNDERWORLD + NOUN figure
PREP. in the … ~ She was a shady figure in the Dublin underworld.

[TahlilGaran] Collocations Dictionary ▲