Synonyms of the word

belowground

• adj. beneath the surface of the ground; underground.

buried

• adj. Placed in a grave at a burial.
• adj. Concealed, hidden.
• v. simple past tense and past participle of bury.

inhumed

• v. simple past tense and past participle of inhume.

interred

• adj. Having been interred.
• adj. (of a buried corpse) Located.
• v. simple past tense and past participle of inter.

subsurface

• n. Something that is below the layer that is on the surface.
• n. (countable, mathematics) A surface which is a submanifold of another surface.
• adj. below the surface.

underground

• adj. (not comparable) Below the ground; below the surface of the Earth.
• adj. Hidden, furtive, secretive.
• adj. Of music, art, etc, outside the mainstream.
• adv. Below the ground.
• adv. Secretly.
• n. (chiefly Britain) An underground railway.
• n. (with "the") A movement or organisation of people who resist political convention.
• n. (with "the") A movement or organisation of people who resist artistic convention.
• v. To route electricity distribution cables underground.