This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The world of the dead.

n. The part of society engaged in crime and vice: "In this black-white nether world, nobody judged the customers” ( Malcolm X).

n. The place to which one's spirit descends upon death, conceived as below the surface of the earth.

n. The locale of the spirit world or afterlife, whether deemed to be situated below the world of the living or not.

n. Specifically, a location of punishment in the afterlife; a hell.

n. A hidden, shadowy, or sinister subculture, such as that of organized crime.

n. (religion) the world of the dead

"Rhyme deduced the FBI man was referring to the netherworld of intelligence—government snooping agencies that might not technically have jurisdiction in the country but who can maneuver through loopholes to keep on top of possible malfeasance within the borders."

imaginary place    fictitious place    mythical place   

astral plane    heaven    nether region    hell    Hades   

hand grenade    subworld    psychopolitical    quality    strategem