underground

Words with a similar base: underground

'underground'

[underground.n.01] as in: a secret group organized to overthrow a government or occupation force

'underground'

[metro.n.01] as in: an electric railway operating below the surface of the ground (usually in a city)

Examples:
in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'

'underground'

[belowground.s.01] as in: under the level of the ground

Examples:
belowground storage areas
underground caverns

'underground'

[clandestine.s.01] as in: conducted with or marked by hidden aims or methods

Examples:
clandestine intelligence operations
cloak-and-dagger activities behind enemy lines
hole-and-corner intrigue
secret missions
a secret agent
secret sales of arms
surreptitious mobilization of troops
an undercover investigation
underground resistance

'underground'

[underground.r.01] as in: in or into hiding or secret operation

Examples:
the organization was driven underground

'underground'

[underground.r.02] as in: beneath the surface of the earth

Examples:
water flowing underground

Origins

					underground (English)
├── ground (English)
│   └── grund (Old English (ca. 450-1100))
└── under (English)
    └── under (Old English (ca. 450-1100))

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