subterranean

• Décrit ce qui existe, se produit ou se trouve sous la surface de la terre.

Describes something that exists, occurs, or is situated beneath the surface of the earth.

1. Located undergroundB2formal

   Existing, situated, or operating beneath the surface of the earth.

   souterrain

   • The subterranean tunnels were used for mining operations.
   • Subterranean rivers flow through limestone caves.
   • The city has an extensive subterranean transportation system.

   Synonymesbelowgroundburiedsubsurfacesubterraneousunderground

   Antonymesabovegroundsurface

2. Hidden or concealedC1formal

   Kept out of sight or deliberately hidden from public view; not openly acknowledged.

   caché, secret

   • The organization had a subterranean network of informants.
   • There was a subterranean current of discontent among the workers.
   • His subterranean motives were eventually revealed.

   Synonymesclandestineconcealedcoverthiddensecretsurreptitiousunderground

   Antonymesacknowledgedopenovertpublic