Word parts change

under- + ground

Pronunciation change

  • (UK) IPA (key): /ˌʌndəˈɡraʊnd/ or /ˈʌndəɡraʊnd/
  • (US) IPA (key): /ˌʌndɚˈɡraʊnd/ or /ˈʌndɚɡraʊnd/
  • (file)
  • Hyphenation: un‧der‧ground

Adjective change

Positive
underground

Comparative
more underground

Superlative
most underground

  1. of or about being under the ground
    Underground water is drying up.
  2. secret or not well known
    The underground music scene is really interesting.
    Underground drug sales have increased over the last year.

Related words change

Preposition change

Preposition
underground

  1. being or moving under the ground
    Let's go underground. It's safer down there.
    The new trains will run underground.
  2. If you go underground, you keep your activities secret.

Noun change

Singular
underground

Plural
undergrounds

  1. The underground is a system of trains that runs mostly under the ground.
    The London underground is a great way to move about the city.