underground
Intermediate (B1)
IPA: /ˈʌndəˌɡraʊnd/
KK: /ʌndərˈgraʊnd/
adjective
Definition
Relating to something that is hidden, secret, or located below the surface of the earth.
Example
The underground movement worked secretly to oppose the government.
Conversation
Have you heard about that underground art scene in the city?
Yeah, I read about it online; it sounds really interesting.
I want to check out some underground galleries this weekend.
That sounds like a great idea! Let's go together.
Synonyms & Antonyms
Synonyms
hidden
covert
subterranean
Antonyms
overt
aboveground
public
adverb
Definition
In a position or state that is below the surface of the earth, or done in secret.
Example
The group operated underground to avoid detection by the authorities.
Conversation
Have you heard about that underground concert this weekend?
Yeah, I heard it’s going to be really exclusive.
I wonder how they keep it so underground and secretive.
noun
Definition
A secret group or movement that works against a government or authority, often in a hidden way. It can also refer to a subway system or a space below the ground.
Example
The underground was crucial in helping people escape from the oppressive regime.
Conversation
Have you ever explored the underground art scene in the city?
No, I haven't, but I've heard it's really vibrant and full of surprises.
You should definitely check it out; there are some amazing galleries down there!
transitive verb
Definition
To place or install something beneath the surface of the ground.
Example
The city is undergrounding the power lines to prevent outages during storms.
Tense Forms
Past: undergrounded
Past Participle: undergrounded
Conversation
Did you hear they are going to underground the power lines in our neighborhood?
Really? That sounds like a smart idea to avoid outages.
Yeah, it should make things look nicer too, without those poles everywhere.
Root Explanation
Underground → It is formed from "under-" (meaning beneath) and "ground" (from Old English "grund", meaning the surface of the earth). The word "underground" refers to something that is located beneath the surface of the earth.
Memory Tip
Think of something that is 'beneath' ('under-') the 'surface of the earth' ('ground') — that's what underground means.
Visually Confused Words
unground