SUBTERRANEAN Synonyms

• under the level of the ground

• underneath the ground

• placed in a grave

• conducted with or marked by hidden aims or methods

• hidden on any grounds for any motive

• not accessible to view

• secret or hidden; not openly practiced or engaged in or shown or avowed

• a flock of coots

• a covering that serves to conceal or shelter something

• (of a wife) being under the protection of her husband

• not accessible to view

• designed to elude detection

• difficult to find

• not clearly expressed or understood

• marked by difficulty of style or expression

• difficult to find

• not famous or acclaimed

• not drawing attention

• remote and separate physically or socially

• make less visible or unclear

• make unclear, indistinct, or blurred

• make unintelligible or unclear

• reduce a vowel to a neutral one, such as a schwa

• make undecipherable or imperceptible by obscuring or concealing

• something that should remain hidden from others (especially information that is not to be passed on)

• information known only to a special group

• something that baffles understanding and cannot be explained

• not open or public; kept private or not revealed

• conducted with or marked by hidden aims or methods

• not openly made known

• communicated covertly

• not expressed

• designed to elude detection

• hidden from general view or use

• (of information) given in confidence or in secret

• indulging only covertly

• having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding

• the next to highest level of official classification for documents

• marked by quiet and caution and secrecy; taking pains to avoid being observed

• conducted with or marked by hidden aims or methods

• on the lower or downward side; on the underside of

• under or below an object or a surface; at a lower place or level; directly beneath

• being or operating under the surface of the earth

• lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)

• lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)

• beyond or outside an area of immediate interest; remote

• coming at a subsequent time or stage

• Existing or growing underground.