(ת') תת-קרקעי; חשאי

adj. beneath the surface of the earth, underground; secret, hidden from view

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Adjective
1. being or operating under the surface of the earth; "subterranean passages"; "a subsurface flow of water"
(synonym) subterraneous
(similar) subsurface
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
(synonym) subterraneous, ulterior
(similar) covert

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