See definition of underground on Dictionary.com

synonyms for underground

On this page you'll find 56 synonyms, antonyms, and words related to underground, such as: buried, covered, subterranean, below ground, in the recesses, and subterrestrial.

antonyms for underground

Most relevant

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

How to use underground in a sentence

Synonym of the Day