noun
ADJECTIVE
▪ dark , murky ( esp. BrE ), seedy , shadowy , sinister
▪
the dark ~ of smuggling
▪ criminal
UNDERWORLD + NOUN
▪ boss , figure
▪ contact
▪
He ran an import-export business and had ~ contacts in Japan.
PREPOSITION
▪ in the … ~
▪
She was a shady figure in the Dublin ~.