Underground

usgb/ˌʌndərˈɡraʊnd/
adjective

Under the surface of the ground.

The subway is an underground system of trains
Visual representation of "underground" - Under the surface of the ground

Often appears as...

  • underground rail
  • underground tunnel
Definition 1 of 6
Visual representation of "underground"
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Physical Space

Used to describe spaces or objects literally beneath the ground surface.

Illustration for Physical Space
The old city has many underground passages.
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Not Visible

Implies something hidden, as it cannot be seen from above ground.

Illustration for Not Visible
You can't see the underground cables, but they are essential.
Visual representation of the word "Underground"

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