Underground and Underneath

Underground

Underground adjective - Undertaken or done so as to escape being observed or known by others.

Underneath and underground are semantically related. In some cases you can use "Underneath" instead an adjective "Underground".

Underneath

Underneath adverb - In or to a lower place.
Show all Definitions
Synonyms for Underneath

Underground and underneath are semantically related. Sometimes you can use "Underground" instead an adjective "Underneath".
Cite this Source
Underneath and Underground. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/underground/underneath
Underground & Underneath. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/underground/underneath>.
Underneath or Underground. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/underground/underneath.
Google Ngram Viewer shows how "underground" and "underneath" have occurred on timeline