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subterranean

[ suhb-tuh-rey-nee-uhn ]
/ ˌsʌb təˈreɪ ni ən /
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adjective Also sub·ter·ra·ne·ous.

existing, situated, or operating below the surface of the earth; underground.
existing or operating out of sight or secretly; hidden or secret.

noun

a person or thing that is subterranean.
a subterrane.

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of subterranean

1595–1605; <Latin subterrāne(us) (see subterrane) + -an

OTHER WORDS FROM subterranean

sub·ter·ra·ne·an·ly, sub·ter·ra·ne·ous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for subterranean

British Dictionary definitions for subterranean

subterranean
/ (ˌsʌbtəˈreɪnɪən) /

adjective

Also: subterraneous, subterrestrial situated, living, or operating below the surface of the earth
existing or operating in concealment

Derived forms of subterranean

subterraneanly or subterraneously, adverb

Word Origin for subterranean

C17: from Latin subterrāneus, from sub- + terra earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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