SUBTERRANEAN as ADJECTIVE

1. Meaning
   • lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)
   Synonym(s)
   • subterraneous (what does subterraneous mean?)
   • ulterior (what does ulterior mean?)
   Usage Example(s)
   • subterranean motives for murder
   • looked too closely for an ulterior purpose in all knowledge- Bertrand Russell
   Similar To
   • covert (what does covert mean?)
2. Meaning
   • being or operating under the surface of the earth
   Synonym(s)
   • subterraneous (what does subterraneous mean?)
   Usage Example(s)
   • subterranean passages
   • a subsurface flow of water
   Similar To
   • subsurface (what does subsurface mean?)