Underground (Adjective)
Meaning 1
Conducted with or marked by hidden aims or methods; "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".
Classification
All adjective clusters.
Synonyms
- Clandestine
- Hole-and-corner
- Surreptitious
- Cloak-and-dagger
- Undercover
- Hush-hush
- Hugger-mugger
- Secret
Related Words
Meaning 2
Under the level of the ground; "belowground storage areas"; "underground caverns".
Classification
All adjective clusters.