Synonyms of underground in English:

underground


See definition of underground

adjective

1‘they drove up the ramp from the underground car park’

SYNONYMS

subterranean, subterrestrial, below ground, buried, sunken, lower-level, basement

rare hypogean

ANTONYMS

surface, overhead

2‘the underground organizations are designed to spread populist propaganda’

SYNONYMS

clandestine, secret, surreptitious, covert, undercover, private, confidential, closet, hole-and-corner, cloak-and-dagger, hugger-mugger, back-alley, backstair, stealthy, conspiratorial, concealed, hidden, shrouded

sneaky, sly, underhand, shifty, furtive

resistance, subversive, guerrilla, mercenary, revolutionary, rebellious, dissident, insurgent, insurrectionary, renegade, mutinous

black

informal hush-hush

3‘the New York underground art scene’

SYNONYMS

alternative, radical, revolutionary, unconventional, unorthodox, avant-garde, experimental, innovative, groundbreaking, pioneering, novel

subversive


adverb

1‘the insects spend years underground as larvae’

SYNONYMS

below ground, below the surface, under the earth, in the earth

2‘the group went underground and issued calls for national resistance’

SYNONYMS

into hiding, into secrecy, into seclusion, undercover, behind closed doors, out of sight


noun

1‘he took the underground back to his studio apartment’

SYNONYMS

underground railway, metro

North American subway

British informal tube

2‘the information had been furnished by the French underground’

SYNONYMS

resistance movement, resistance, illegal opposition

partisans, guerrillas, freedom fighters

historical Maquis