Search Result for "subterranean": 
Wordnet 3.0

ADJECTIVE (2)

1. being or operating under the surface of the earth;
- Example: "subterranean passages"
- Example: "a subsurface flow of water"
[syn: subterranean, subterraneous]

2. lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed);
- Example: "subterranean motives for murder"
- Example: "looked too closely for an ulterior purpose in all knowledge"- Bertrand Russell
[syn: subterranean, subterraneous, ulterior]



The Collaborative International Dictionary of English v.0.48:

Subterranean \Sub`ter*ra"ne*an\, Subterraneous
\Sub`ter*ra"ne*ous\, a. [L. subterraneus; sub under + terra
   earth. See Terrace.]
   Being or lying under the surface of the earth; situated
   within the earth, or under ground; as, subterranean springs;
   a subterraneous passage. -- Sub`ter*ra"ne*ous*ly, adv.
   [1913 Webster]


WordNet (r) 3.0 (2006):

subterranean
    adj 1: being or operating under the surface of the earth;
           "subterranean passages"; "a subsurface flow of water"
           [syn: subterranean, subterraneous]
    2: lying beyond what is openly revealed or avowed (especially
       being kept in the background or deliberately concealed);
       "subterranean motives for murder"; "looked too closely for an
       ulterior purpose in all knowledge"- Bertrand Russell [syn:
       subterranean, subterraneous, ulterior]