underground
🇺🇸
/ˌʌndərˈɡraʊnd/
🇬🇧
/ˌʌndəˈɡraʊnd/
adjective
A2
below the ground's surface
The underground tunnel helps people cross the street safely.
R
secret and often illegal, especially against a government
The underground group planned to protest against the new law.
adverb
R
in hiding to avoid police or government
He lived underground to escape the authorities.
noun
R
a city train system that runs below ground
We took the underground to get to the museum quickly.
R
a secret group working against the government
The underground worked in secret to oppose the government.
R
a person in a secret group against the government
The underground member passed information secretly.
translation
below the ground's surface; secret and often illegal, especially against a government
in hiding to avoid police or government
a city train system that runs below ground; a secret group working against the government; a person in a secret group against the government
Word Forms
Plural
undergrounds