Open and Underground

Opposite meaning words

sentence examples

Open

Open adjective - Open and observable; not secret or hidden.
Usage example: open ballots
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Synonyms for Open
Antonyms for Open
Underground is an antonym for open.
Nearby Words: opening, openness, opened, opener

Underground

Underground adjective - Undertaken or done so as to escape being observed or known by others.
Usage example: an underground operation to smuggle ancient artifacts out of the country
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Synonyms for Underground
Antonyms for Underground
Open is an antonym for underground in secret topic.
Similar words of open

Similar words of underground

Both words in one sentence

  • He's in a carefully monitored glass case, that is in the military's version of out in the open - that is in a very open position in a secret underground labratory.
    Source: Chekhov's Exhibit
  • Underground Level There's even a wide-open cavern deep underground connecting three Dwemer fortresses, once the location of the Dwemer city of Blackreach.
    Source: Underground Level
  • Elaborate Underground Base The HYDRA facilities in Captain America: The First Avenger are above ground and in the open, and their main base is dug into the Alps, and is implied to be 500 feet underground.
    Source: Elaborate Underground Base
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Cite this Source
Underground and Open. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/open/underground
Open & Underground. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/open/underground>.
Underground or Open. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/open/underground.

Antonyms for open


Antonyms for underground

Google Ngram Viewer shows how "open" and "underground" have occurred on timeline