subterraneously
Below the surface
Subterraneously means beneath the earth's surface.
Rivers can flow subterraneously through limestone caves.
The word also applies figuratively to things happening out of sight or in secret: The deal was arranged subterraneously, away from public scrutiny.
Enclosed underground route
- cavernLarge natural underground chamber
- burrowAnimal's dug dwelling
- excavationAct of unearthing
- miningExtracting earth's resources
subway · bunker · underpass · basement · catacomb · grotto · aquifer · bedrock
Placed beneath earth
- entombedSealed in burial chamber
- interredDeposited in earth
- embeddedSet firmly within something
- concealedMade invisible deliberately
sequestered · sunken · tucked · nestled · invisible · undetected · obscured · unseen
Concealed from authorities
- secretiveInclined to conceal
- surreptitiousDone secretly, avoiding detection
- stealthySecretly cautious in movement
- undercoverSecretly engaged in espionage
covert · furtive · cloak-and-dagger · backdoor · hush-hush · undisclosed · confidential · discreet
tunnel
Enclosed underground route
- cavernLarge natural underground chamber
- burrowAnimal's dug dwelling
- excavationAct of unearthing
mining · subway · bunker · underpass · basement · catacomb · grotto · aquifer · bedrock · subsoil
buried
Placed beneath earth
concealed · sequestered · sunken · tucked · nestled · invisible · undetected · obscured · unseen · covered
clandestine
Concealed from authorities
- secretiveInclined to conceal
- surreptitiousDone secretly, avoiding detection
- stealthySecretly cautious in movement
undercover · covert · furtive · cloak-and-dagger · backdoor · hush-hush · undisclosed · confidential · discreet · incognito
sheltered
Kept safe from harm
stronghold · refuge · sanctuary · haven · safehouse · insulated · secure · redoubt · citadel · bastion
subterraneouslyaboveground
Not beneath the earth
above ground · on the surface · overground · aerially · skyward