Synonyms for

Underground

Verb Another word for underground — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

beneath the surface of the earth; in or into hiding or secret operation

Synonyms & similar words

cloakanddagger tube subway subwaysystem metro clandestine holeandcorner huggermugger hushhush secret belowground surreptitious resistance undercover subterranean belowground underneath buried secret hidden covert clandestine submerged sunken concealed undercover black furtive surreptitious stealthy unseen unobtrusive unnoted unremarked

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