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Synonyms & Antonyms of underground
(Entry 1 of 3)
1
undertaken or done so as to escape being observed or known by others
- an underground operation to smuggle ancient artifacts out of the country
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Antonyms for underground
2
being, situated, or operating beneath the surface of the earth
- an underground shopping mall that is part of the city's subway system
Synonyms for underground
Antonyms for underground
underground
nounSynonyms of underground (Entry 2 of 3)
a secret organization in a conquered country fighting against enemy forces
- joined the underground while still a teenager
Synonyms for underground
Words Related to underground
underground
adverbSynonyms & Antonyms of underground (Entry 3 of 3)
as in surreptitiously, stealthily
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Merriam-Webster unabridged
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Time Traveler for underground
The first known use of underground was in the 14th century
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