Definition
Meaning of 'underground'
Meaning of 'underground' (Webster Dictionary)
1. Underground 
[ a.]
- Being below the surface of the ground; as, an
underground story or apartment. [ a.]- Done or occurring out of sight; secret.
2. Underground [ adv.]
- Beneath the surface of the earth. [ adv.]3. Underground [ n.]
- The place or space beneath the surface of the ground;
subterranean space. [ n.]Meaning of 'underground' (Princeton's WordNet)
1. underground [ n]
[ n]Meaning (1):
- an electric railway operating below the surface of the ground (usually in a city)
- an electric railway operating below the surface of the ground (usually in a city)
Example in sentence:
- in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'
2. underground [ r]
[ r]Meaning (2):
- in or into hiding or secret operation
- in or into hiding or secret operation
Example in sentence:
- the organization was driven underground
Meaning (3):
- beneath the surface of the earth
- beneath the surface of the earth
Example in sentence:
- water flowing underground
3. underground [ s]
[ s]Meaning (4):
- under the level of the ground
- under the level of the ground
Example in sentence:
- belowground storage areas;
- underground caverns
Meaning (5):
- conducted with or marked by hidden aims or methods
- conducted with or marked by hidden aims or methods
Example in sentence:
- a secret agent;
- an undercover investigation;
- clandestine intelligence operations;
- cloak-and-dagger activities behind enemy lines;
- hole-and-corner intrigue;
- secret missions;
- secret sales of arms;
- surreptitious mobilization of troops;
- underground resistance
See 'underground' also in:
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