SOUTERRAINS Synonyms

• a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea

• hollow out as if making a cave or opening

• explore natural caves

• the lowermost portion of a structure partly or wholly below ground level; often used for storage

• an excavation where root vegetables are stored

• storage space where wines are stored

• a cellar or vault or underground burial chamber (especially beneath a church)

• 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)

• a passageway through or under something, usually underground (especially one for trains or cars)

• a hole made by an animal, usually for shelter

• move through by or as by digging

• force a way through

• a secret group organized to overthrow a government or occupation force

• an electric railway operating below the surface of the ground (usually in a city)

• in or into hiding or secret operation

• beneath the surface of the earth

• under the level of the ground

• conducted with or marked by hidden aims or methods

• a burial chamber (usually underground)

• a strongroom or compartment (often made of steel) for safekeeping of valuables

• an arched brick or stone ceiling or roof

• the act of jumping over an obstacle

• jump across or leap over (an obstacle)

• bound vigorously