Definition of underground

underground    

adjective

• secret.
  • See more words with the same meaning: quiet, secret.

  Last edited on Dec 05 2011. Submitted by Walter Rader (Editor) from Sacramento, CA, USA on Sep 21 2009.

+	Add a definition for this slang term

Share Tweet E-mail	More info:	Interactive stats:
	R  Related words	Usage Vulgarity SlangMap

Related words

Slang terms with the same meaning

Other terms relating to 'quiet, secret':
on the DL	Definitions include: "on the down low", i.e. secret.
QT	Definitions include: "cutie."
back room	Definitions include: away from public scrutiny.
mum	Definitions include: mom aka "mother".
on the sly	Definitions include: secretive.
DL, the	Definitions include: See on the DL.

Slang terms with the same root words

None. How about some random words?

freaky-deaky	Definitions include: freaky.
Fight or Flight Response Sin-Virtue Position Compromise	Definitions include: An idea that fight or flight mode aligns with compromising or uncompromising a sin-virtue position, if fight mode is active then the sin-virtue position is compromising towards the offense sin-virtue position of something else resulting in the sin-virtue position to shift towards the offense sin-virtue position, or if flight mode is active then the sin-virtue position is uncompromising towards the offense sin-virtue position of something else resulting in the sin-virtue position to shift away from the offense sin-virtue position.
psyched	Definitions include: very excited.
rank and file	Definitions include: low-level employees.
whole other ball game	Definitions include: something completely different
make heads or tails out of	Definitions include: to figure out.
Marble Run 3D	Definitions include: Marble Run 3D is a fast-paced marble racing game where you not only have to control the marbles on the track but also collide, compete and use support tools to win. The game has simple controls but has challenging tracks with sharp turns, deep gaps and broken paths, making every race intense.
fizzler	Definitions include: A firecracker, cracked in half.
cracker jack	Definitions include: a person who is particularly noteworthy for his or her ability, deserving admiration.
fired up	Definitions include: excited.

How common is this slang?

Don't click the following.
I use it	(7)
No longer use it	(0)
Heard it but never used it	(2)
Have never heard it	(2)

How vulgar is this slang?

Average of 14 votes: 34%  (See the most vulgar words.)

Least vulgar

Most vulgar

Your vote: None   (To vote, click the pepper. Vote how vulgar the word is – not how mean it is.)

Least vulgar

Most vulgar

Where is this slang used?

Logged-in users can add themselves to the map. Login, Register, Login instantly with Facebook.

Link to this slang definition

To link to this term in a web page or blog, insert the following.

<a href="http://onlineslangdictionary.com/meaning-definition-of/underground">underground</a>

To link to this term in a wiki such as Wikipedia, insert the following.

[http://onlineslangdictionary.com/meaning-definition-of/underground underground]

Some wikis use a different format for links, so be sure to check the documentation.