Thesaurus Dictionary
Synonyms and antonyms of Under or below in British Thesaurus
Under or below
underneath (adjective)
in, to, or through a place directly below something or directly covered by it
underground (adjective)
underlying (adjective)
subterranean (adjective)
under the ground
nether (adjective)
literary the nether part of something is the lower part or the part underneath
underfloor (adjective)
underground (adverb)