Thesaurus

underground

adjective

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

Synonyms for underground

Words Related to underground

Near Antonyms for underground

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

noun

Synonyms 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

adverb

Synonyms & Antonyms of underground (Entry 3 of 3)

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Learn More About underground

Time Traveler for underground

Time Traveler

The first known use of underground was in the 14th century

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Thesaurus Entries Near underground

undergraduates

underground

undergrounds

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Cite this Entry

“Underground.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underground. Accessed 24 May. 2022.

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More from Merriam-Webster on underground

Nglish: Translation of underground for Spanish Speakers

Britannica English: Translation of underground for Arabic Speakers

Britannica.com: Encyclopedia article about underground

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