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subterranean

subterranean

6 7.4
Hidden and not openly shown
  • adjective
  • /ˌsʌbtəˈreɪniən/
translation icon : subterráneo
  • Vivian, saddened and shocked, was ready to believe in a subterranean connection between the two arrests.
  • subterranean worlds

A low grade dread had always drifted at the subterranean level and now it had surfaced.

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Examples

  • The false front covered a subterranean life of grim depth and reach.

    Fiction book (1999)
  • In this context, any cross-national or regional interaction within the Islamic movement is likely to be subterranean.

    Academic text (1999)
  • Years ago, we built a subterranean secret facility to protect us from the radiation.

  • Building bridges is cool, but what about subterranean trains?

  • The theme of Christian unity is running through the whole conference like a subterranean stream.

    Academic text (2014)
  • There was a dull, subterranean anger in me.

    Fiction book (2000)
  • Most of us already suspect that subterranean life drives our sexual and romantic desires.

    Academic text (2011)
  • His voices are nuanced and human; subterranean regions of feeling emerge through the surface of the melodic lines.

    Academic text (1999)
  • A low grade dread had always drifted at the subterranean level and now it had surfaced.

  • The subterranean tunnels stretch for miles beneath the city, connecting various landmarks.

Synonyms

underground
vssubterranean
153 5.7

Hidden and done secretly to avoid being found by authorities

is more about physical below-surface existence than secrecy
hidden
vssubterranean
125 1.1

A thing that is not easily seen or found

relates to being beneath the surface rather than only concealed
clandestine
vssubterranean
  • Formal
40 8.2

Kept secret because it is illegal or not allowed

is about physical or hidden presence beneath a surface, not only illicit secrecy
underlying
vssubterranean
16 4.0

Under another thing, often below the surface

emphasizes hidden or secret sense beyond mere position
subsurface
vssubterranean
6 6.3

Under the ground or below the top layer of a place

focuses more on being hidden or not openly revealed
subterraneous
vssubterranean
8.8

Existing under the surface of the earth, like pipes or caves

also implies being hidden or not openly revealed
subterrene
vssubterranean
9.6

Found under the ground and out of sight

is used for physical location rather than hidden activity
belowground
vssubterranean
4.3

Under the ground surface

is more about being hidden or secret as well as location

Antonyms

53 5.1

Open and easy to notice, not hidden

How Hidden

subterranean
6 7.4
covert
117 6.8
secret
2.0
private
1.8
public
1.0

Surface Forms

subterranean positive

Morphology

subterranean = terrain (semi-transparent) = sub + terra + anean

The prefix 'sub-' clearly indicates 'below', but the suffix 'anean' is less familiar to learners.

Etymology

Subterranean comes from the Latin parts sub- 'under' and terra 'earth', and it gives the image of something 'under the surface'. So it is used for hidden ideas, motives, or forces that work quietly and are not openly shown.