Meaning & Definition
noun
A place that is beneath the surface of the ground.
The underground is home to a variety of creatures and plants that thrive in darkness.
A movement or group operating outside the mainstream or seeking to promote a particular cause.
The artist was part of the underground that pushed for social change through their work.
A subway or metro system.
She takes the underground to work every day to avoid traffic.
adjective
Located, conducted, or growing beneath the surface of the ground.
The underground pipe system carries water to various parts of the city.
Operating or existing in secrecy, often in opposition to the established system.
The underground movement aimed to challenge the authoritarian regime.
Relating to a counterculture or subculture existing outside the mainstream.
He loves listening to underground music that isn't played on commercial radio.
Etymology
Derived from Middle English undergrun, combining 'under' and 'ground'.
Common Phrases and Expressions
underground movement:
A social or political movement operating out of sight of the mainstream.
underground music:
Music that is produced and consumed outside of mainstream channels.
Slang Meanings
A term used for something trendy or avant-garde.
That film is so underground, it premiered at a tiny festival.
Referring to hidden or lesser-known artists or musicians.
He's an underground rapper who's gaining a following.